SHJ Solar Cell Degradation & Durability Patent Snapshot
The formal patent corpus for SHJ (silicon heterojunction) degradation and durability currently comprises 1 patent family, filed in India in 2022, with all ranked filers classified as new entrants. Activity in this specific sub-field remains nascent, and the corpus is far too small to draw structural conclusions about competitive concentration or technology trajectories.
A nascent field with no established leaders
The applicant ranking for SHJ degradation and durability is flat: each of the five ranked filers holds 1 patent record, and no single entity has established a commanding position.
The top five filers account for 100% of the ranked applicants visible in this query’ combined total — a statistic that reflects the extreme smallness of the corpus rather than meaningful market concentration.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Dr. Ranadheer Donthi | 1 | |
| 2 | Dr. M. Dhamodhara Naidu | 1 | |
| 3 | Dr. A. Srinivasa Pradeep | 1 | |
| 4 | Dr. Jagadeeshwar Pashikanti | 1 | |
| 5 | Dr. Venkanna Kanneboina | 1 |
The absence of established corporate or institutional leaders suggests that no incumbent has yet claimed visible IP coverage in this sub-field, leaving the technical territory largely open.
The most recent years should be treated as under-counted due to standard patent publication lag; the true current filing rate may be higher than the evidence shows. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A single 2022 filing defines the entire trend line
The annual filing trend and technology composition charts together describe a field that has produced one disclosed filing in ten years. The technology composition is entirely within semiconductor device classes.
Annual filing trend
One patent record was filed in 2022; all other years in the window show zero activity. The most recent two to three years should be read as potentially under-counted due to publication lag, so the apparent absence of post-2022 filings does not confirm inactivity.
↗ Hover for values · click a bar to ask EurekaTechnology composition
All disclosed activity falls under H01L (Semiconductor devices), with no diversification into other IPC classes visible in the current corpus. This narrow composition reflects the corpus size rather than a deliberate technology focus.
↗ 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.
Passivation of interface defects by hydrogen plasm…
The photovoltaic industry is likely to be dominated by silicon heterojunction (SHJ) solar cells because of their stability and capability of high power conversion efficiency (PCE). Interdigitated back contact-SHJ solar cells have thus far achieved a maximum power conversion efficiency (PCE) of 26.7%, close to the theoretical Shockley-Queisser (SQ) limit of… (excerpt from the patent abstract)
Open this patent in Eureka →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.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
Dr. Ranadheer Donthi
Dr. Ranadheer Donthi is ranked first by filing count but shares that position with four co-filers, each holding 1 patent record. Technology emphasis covers H01L 31 and H01L 51 semiconductor device classes. Momentum is classified as a new entrant, reflecting first appearance in the corpus with no prior-period baseline.
patent records: 1Dr. Venkanna Kanneboina
Dr. Venkanna Kanneboina holds 1 patent record with the same H01L 31 and H01L 51 technology focus as the top-ranked filer. Like all peers, trend is classified as a new entrant. At this corpus size, the challenger designation reflects rank ordering only, not a meaningful competitive gap.
patent records: 1Frequently asked questions
The current corpus contains 1 patent family in scope. This is an unusually small corpus for a defined technology sub-field, which may reflect narrow search parameters, publication lag on recent filings, or genuine early-stage IP activity in this specific area.
Five individuals appear in the applicant ranking — Dr. Ranadheer Donthi, Dr. M. Dhamodhara Naidu, Dr. A. Srinivasa Pradeep, Dr. Jagadeeshwar Pashikanti, and Dr. Venkanna Kanneboina — each holding 1 patent record. No corporate or institutional entity appears in the current ranking.
India is the only jurisdiction represented in the corpus, with 1 patent record. No filings under PCT, at the EPO, or in major markets such as the United States or China appear in the current evidence.
All disclosed activity falls under H01L (Semiconductor devices), specifically H01L 31 and H01L 51. No other IPC classes are represented in the current corpus.
The trend data shows one filing in 2022 and zero in all other years from 2017 to 2026. Growth cannot be assessed from a single data point. The most recent years are subject to publication lag, so apparent zero counts after 2022 do not confirm the absence of new filings.
No co-applicant pairs are recorded in the current corpus. The five ranked individuals may share inventor or co-filing relationships on the single disclosed record, but a formal collaboration network cannot be confirmed from the available evidence.
Built on Patsnap Open Platform
This report’s underlying patent dataset — filings, assignees, technology clusters — is open for developers via MCP and REST API. Free to start, 10,000 credits, no credit card required.
Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
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.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.