Wireless Power Transfer for Agricultural Irrigation Patents
This is a highly concentrated, early-stage niche: two filers — QBYSS LTD and Energy Resources Laboratory Ltd — account for the majority of a 22-family corpus that peaked in 2021 and has since eased. The United States is the dominant filing jurisdiction, while agronomic-specific patent branches remain almost entirely unclaimed.
QBYSS LTD leads a tightly held, small-corpus niche
QBYSS LTD holds the top position with 10 patent families, nearly double the second-ranked Energy Resources Laboratory Ltd at 5 patent families. The top five filers together represent 79% of the hundred largest filers’ combined total, signaling a strongly concentrated competitive structure with little distributional spread beyond the first two tiers.
The tier gap is pronounced: the top two applicants together account for the large majority of ranked activity, while eight further applicants each hold only one patent family. No mid-tier cluster of three-to-five family filers has yet formed, which is characteristic of a field that has not yet attracted sustained investment from multiple large organizations.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | QBYSS LTD | 10 | |
| 2 | Energy Resources Laboratory Ltd | 5 | |
| 3 | NHN Corporation | 2 | |
| 4 | Chitkara University | 1 | |
| 5 | IntDevice Ltd | 1 | |
| 6 | CILAG GmbH International | 1 | |
| 7 | PRABHAKAR M | 1 | |
| 8 | Chitkara Innovation Incubator Foundation | 1 | |
| 9 | MAHASHREE P | 1 | |
| 10 | Reva University | 1 |
The leaders’ positions imply first-mover advantages primarily in power supply and grid-interface circuitry rather than in irrigation-specific application layers. Challengers entering now would find the core wireless-transfer circuit IP occupied but the agronomic application layer largely open.
The most recent 18–24 months of data are subject to publication lag and likely under-represent actual filings; apparent low counts for 2024–2025 should not be taken as confirmed activity levels. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Activity peaked in 2021; power-circuit classes dominate the technology mix
The filing trend reveals a burst of activity around 2021 followed by a reduction in annual volume, while the IPC composition shows heavy concentration in power-supply and conversion classes with minimal representation in agronomic or sensing branches.
Annual filing trend
Filings were negligible before 2019, surged to a peak of 8 families in 2021, then dropped sharply in 2022 before a partial rebound in 2023. Counts for 2024 and 2025 are almost certainly under-reported due to publication lag and should not be interpreted as a sustained decline.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H02J (power supply and grid systems) and H02M (power conversion) together dominate the IPC distribution. Application-layer classes — including A01G (horticulture and forestry), G01N (material analysis), and G05F (variable control) — each carry only a single record, confirming that the field’s patent activity is concentrated in the enabling power-electronics layer rather than the agricultural end-use layer.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Relating to wireless power transfer
Disclosed is a system provided with a vibration device and cooling fluid for interstitial laser therapy. Use of the vibration device to vibrate at least part of the system releases and assists in the transfer of gas bubbles (e.g. steam) produced during treatment use, thus stabilising the temperature at or near a treatment site. The system for interstitial… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Transmitter for wireless charging power transmissi… | 23 |
| 2 | inverter | 3 |
| 3 | An inverter | 2 |
| 4 | An inverter | 2 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the structure means for R&D investment decisions
The corpus is small, concentrated, and past its 2021 peak, but adjacent technology branches remain almost entirely unpopulated, offering defined entry angles for teams with both power-electronics and agri-tech competence.
Post-peak, with annual volume easing from the 2021 high
The lifecycle stage is classified as Decline, driven by annual filings easing back from the 2021 peak of 8 families. The multi-year window still reflects net growth from a near-zero 2017–2018 base, so the technology concept is validated but has not yet attracted the sustained annual investment that would characterize a growth phase. New entrants should assess whether the recent volume reduction reflects market hesitation or publication lag before committing to a full landscape program.
Lifecycle: DeclineTwo filers hold the commanding positions; long tail is thin
The top five filers represent 79% of the hundred largest filers’ combined total, and eight of the ten ranked applicants hold only a single patent family each. This structure means a new entrant with three or more families in a differentiated sub-area could plausibly enter the top tier. There is no evidence of a mid-tier cluster that would signal broad industry adoption.
HHI: Very HighReva University anchors the only visible co-filing network
The collaboration evidence shows three distinct co-filing pairs — Prabhakar M with Reva University, Mahashree P with Reva University, and Kaunte Manjunath with Reva University — each with one jointly filed family. All three point to a single academic hub (Reva University) as the focal node of collaborative activity. No commercial co-filing pairs are visible in the corpus, which suggests that industry–academia technology-transfer pipelines in this space are largely undeveloped.
Co-filer: Reva UniversityUS-centric filing; limited international protection strategy
The United States leads with 11 records, followed by Europe (EPO) and WIPO (PCT) with 4 records each, India with 2, and the United Kingdom with 1. The relatively low PCT uptake relative to the US count suggests that most applicants are pursuing national-stage protection primarily in their home market rather than building global patent portfolios. India’s presence as a filing jurisdiction, driven by the Reva University cluster, adds a developing-market dimension absent from most comparably small niches.
Lead Office: United StatesGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| PRABHAKAR M | Reva University | 1 |
| MAHASHREE P | Reva University | 1 |
| KAUNTE MANJUNATH | Reva University | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
QBYSS LTD and Energy Resources Laboratory Ltd lead by divergent technology routes
The two leading filers have distinct technical profiles: QBYSS LTD’s focus is not fully characterized in the technology-emphasis evidence, while Energy Resources Laboratory Ltd shows deep power-conversion expertise. Both are classified as new entrants on momentum metrics, reflecting the field’s recent emergence.
QBYSS LTD
QBYSS LTD holds 10 patent families, making it the clear corpus leader with roughly twice the portfolio of its nearest rival. Its momentum trend is not listed in the applicant-momentum evidence, indicating its filing activity predates the recent window tracked for new-entrant classification. Its dominant position in this small-corpus niche gives it broad prior-art coverage across the enabling power-transfer layer.
families: 10Energy Resources Laboratory Ltd
Energy Resources Laboratory Ltd holds 5 patent families and carries a ‘new entrant’ momentum flag with 6 recent filings, indicating that its entire visible portfolio has been built in the most recent filing window. Its technology emphasis is heavily weighted toward power conversion (H02M 7 and H02M 1) and grid-interface systems (H02J 3), suggesting a power-electronics-first strategy rather than an agronomic application focus. This recent and concentrated entry makes it the most active challenger to QBYSS LTD’s lead.
families: 5| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Energy Resources Laboratory Ltd | 6 | ▲ new entrant |
| Reva University | 1 | ▲ new entrant |
| PRABHAKAR M | 1 | ▲ new entrant |
| MAHASHREE P | 1 | ▲ new entrant |
Agronomic and sensing branches are under-served relative to the power-circuit core
Nine IPC branches outside the dominant H02J and H02M classes each carry only a single patent record, representing observed sparsity rather than confirmed opportunity. Two branches have plausible technical value and realistic entry paths given the application domain.
A01G · Horticulture & Forestry — application-layer gap
A01G holds only 1 record out of the full distribution, representing a 3% share of branch-level records. This is notable because wireless power transfer for irrigation is conceptually an agronomic application, yet almost no filings have been anchored in the class most directly associated with plant cultivation and water management systems. An entrant combining H02J wireless-transfer circuit claims with A01G irrigation-system claims could occupy the application-layer space that existing filers have left unclaimed. The technical path involves coupling WPT coil design to soil-moisture sensor or drip-valve actuation systems.
Search this in Eureka →G05F · Electric/Magnetic Variable Control — power-regulation gap
G05F carries only 1 record, despite variable power control being a critical functional requirement for field-deployed irrigation equipment operating under fluctuating solar or grid-edge supply conditions. The existing corpus addresses power transfer and conversion (H02J, H02M) but largely omits adaptive regulation and feedback-control architectures. A team with control-systems expertise could enter this adjacent branch by developing closed-loop WPT regulation methods tuned to intermittent agricultural power sources, which would complement rather than directly compete with the existing H02J-heavy portfolios.
Search this in Eureka →How leaders differ by technology route across the IPC branch matrix
Route coverage across the main technology branches in the current evidence set.
| Player | H02M 7 · Power conversion (AC/DC etc.) | H02M 1 · Power conversion (AC/DC etc.) | H02J 50 · Power supply & grid systems | H02J 3 · Power supply & grid systems | H02J 7 · Power supply & grid systems |
|---|---|---|---|---|---|
| Energy Resources Laboratory Ltd | Strong · 12 | Strong · 11 | Moderate · 5 | Moderate · 6 | Absent |
| NHN Corporation | Absent | Absent | Strong · 2 | Absent | Strong · 2 |
| MAHASHREE P | Absent | Absent | Strong · 1 | Absent | Strong · 1 |
| PRABHAKAR M | Absent | Absent | Strong · 1 | Absent | Strong · 1 |
| Reva University | Absent | Absent | Strong · 1 | Absent | Strong · 1 |
| IntDevice Ltd | Absent | Absent | Strong · 1 | Absent | Strong · 1 |
Frequently asked questions
The corpus in scope contains 22 patent families. This is a small, specialized niche rather than a broad technology domain, which means competitive positioning can shift significantly with even a handful of new filings.
QBYSS LTD holds the top position with 10 patent families, approximately double the count of the second-ranked applicant, Energy Resources Laboratory Ltd, which holds 5 patent families.
The United States leads with 11 patent records, followed by Europe (EPO) and WIPO (PCT) with 4 records each, India with 2 records, and the United Kingdom with 1 record. PCT uptake is relatively limited, indicating most applicants are not pursuing broad multinational protection.
H02J (power supply and grid systems) and H02M (power conversion) together account for the large majority of IPC branch records. Agronomic classes such as A01G (horticulture and forestry) and sensing or control classes such as G01N and G05F each carry only a single record.
Annual volume peaked at 8 patent families in 2021 and has since eased, placing the field in a decline lifecycle stage. The most recent 18–24 months are subject to publication lag, so 2024–2025 counts are likely under-reported and should not be read as confirmation of a sustained trend.
The only visible co-filing activity involves Reva University, which has jointly filed with three individual inventors — Prabhakar M, Mahashree P, and Kaunte Manjunath — each pair producing one co-filed family. No commercial co-filing pairs are present in the evidence, suggesting industry–academia transfer relationships in this niche are limited.
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Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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