Laser Diode Cavity & Waveguide Design Patent Snapshot
This is a mature, declining-activity space: annual filing volume peaked in 2017 and has eased sharply since, with a small cluster of U.S.-headquartered specialists and industrial laser firms holding the top positions. The evidence snapshot is moderately concentrated, with three applicants tied at the top and H01S (Lasers & stimulated emission) accounting for the dominant share of technology coverage.
Three applicants share the top rank in a modestly sized but technically dense field
3M Innovative Properties Co, nLight Inc, and Kyocera SLD Laser Inc are tied at the top of the applicant ranking, each with 9 patent records. Sarnoff Corp follows with 7, and Trumpf Photonics Inc with 6.
The top five filers account for 39% of the combined total across the ranked applicants visible in this query, indicating moderate concentration with no single visible owner — a tier-gap exists, but it is not extreme.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | 3M Innovative Properties Co | 9 | |
| 2 | nLight Inc | 9 | |
| 3 | Kyocera SLD Laser Inc | 9 | |
| 4 | Sarnoff Corp | 7 | |
| 5 | Trumpf Photonics Inc | 6 | |
| 6 | NIPPON TELEGRAPH & TELEPHONE CORP | 5 | |
| 7 | DuPont Electronic Materials International LLC | 5 | |
| 8 | Innolume | 4 | |
| 9 | Lumentum Technology UK Ltd | 4 | |
| 10 | II-VI Laser Enterprise | 3 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | NOKIA SOLUTIONS & NETWORKS OY | 3 | |
| 12 | Exalos AG | 3 | |
| 13 | Lumentum Operations LLC | 2 | |
| 14 | NATIONAL TECHNOLOGY & ENGINEERING SOLUTIONS OF SAN… | 2 | |
| 15 | II-VI Delaware Inc | 2 | |
| 16 | Nortel Networks Optical Components GmbH | 2 | |
| 17 | James N. Walpole | 2 | |
| 18 | Xerox Corporation | 2 | |
| 19 | Futurewei Technologies Inc | 2 | |
| 20 | Princeton Lightwave Inc | 2 |
The presence of diversified industrial players (3M, Trumpf), telecom-heritage firms (Nippon Telegraph & Telephone, Nortel Networks), and specialist laser companies (nLight, Kyocera SLD Laser, Innolume) signals that the space has attracted both vertically integrated manufacturers and focused photonics specialists, without any single entity achieving decisive lock-in.
Filings from the most recent 18–24 months are subject to publication lag and should be treated as under-counted; the apparent near-zero activity in 2025–2026 does not necessarily reflect true origination rates for those years.
Filing activity has eased from its 2017 peak; H01S dominates the technology mix
The annual trend chart and the IPC composition chart together reveal both the temporal arc of this field and where technical effort has been concentrated.
Annual filing trend
Annual filings peaked at 8 families in 2017, fell to low single digits through 2018–2021, and have registered only 1–2 per year since 2022. The near-zero values for 2025–2026 reflect publication lag rather than confirmed cessation of activity; interpret recent years with caution.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01S (Lasers & stimulated emission) is the commanding IPC class, followed at a distance by G02B (Optical elements & systems). G02F (Optical control & modulation) and H01Q (Antennas) are materially smaller branches, and several other classes appear with only 1–2 records each, pointing to areas of relative sparsity adjacent to the core.
↗ 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.
High power semiconductor laser diode and method fo…
Semiconductor laser diodes, particularly high power ridge waveguide laser diodes, are often used in opto-electronics as so-called pump laser diodes for fiber amplifiers in optical communication lines. To provide the desired high power output and stability of such a laser diode and avoid degradation during use, the present invention concerns an improved… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Optical source with mode reshaping | 176 |
| 2 | Multiwavelength actively mode-locked external cavi… | 149 |
| 3 | Laser device for nonlinear conversion of light | 40 |
| 4 | Laser diode chip with waveguide | 38 |
| 5 | Laser diode chip with waveguide | 30 |
| 6 | High power antiguided semiconductor laser with int… | 28 |
| 7 | High power semiconductor laser diode and method fo… | 27 |
| 8 | Laser device for nonlinear conversion of light | 26 |
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.
3M Innovative Properties Co
3M Innovative Properties Co leads with 9 patent records, with technology emphasis spread across H01S 5 (laser diodes), G02B 6 (optical fiber and waveguides), and H01S 3 (gas/solid-state lasers). This breadth reflects 3M’s diversified photonics portfolio rather than a narrow device specialization. Applicant momentum data is not available for this corpus.
patent records: 9nLight Inc
nLight Inc is tied with 9 patent records and concentrates its filings in H01S 5 (laser diodes), consistent with its commercial focus on high-power semiconductor lasers for industrial and defense applications. Kyocera SLD Laser Inc also holds 9 records with an H01S 5 emphasis plus selective G02B 6 and H01S 3 coverage. Applicant momentum data is not available for this corpus.
patent records: 9Frequently asked questions
The corpus examined contains 30 patent families in scope for this topic.
3M Innovative Properties Co, nLight Inc, and Kyocera SLD Laser Inc are each tied with 9 patent records, making them the joint top filers. Sarnoff Corp follows with 7 records and Trumpf Photonics Inc with 6.
H01S (Lasers & stimulated emission) is by far the largest IPC class represented, followed by G02B (Optical elements & systems). Together they cover the great majority of records in the corpus.
The United States is the lead filing jurisdiction, followed by Europe (EPO) and WIPO (PCT). Israel, Australia, Austria, China, and Japan are secondary jurisdictions, with China and Japan having notably fewer records than the U.S. and EPO despite their prominence in laser manufacturing.
The lifecycle assessment places this field in decline. Annual filings peaked in 2017 and have eased sharply since. Values for 2025–2026 should be treated as under-counted due to publication lag, but the broader trend from 2017 onward is downward.
No co-applicant collaboration activity is detected in this corpus. All filings appear to be solely owned, which is consistent with a proprietary, independently developed IP strategy among the visible assignees.
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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.