PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Sanwa Denki Kogyo Co., Ltd.

USPTO PatentsView assignee record - 18 granted patents across 3 technology areas, recorded in grant years 2015–2025. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: G02B (Optical Elements, Systems OR Apparatus).

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The verdict

According to USPTO PatentsView, Sanwa ranks #16,330 of 49,997 tracked US assignees by granted-patent volume, with 18 patents across 3 technology areas.

#16,330
of 49,997 US assignees by volume
6th percentile
by Innovation Score (19.9/100)
6.0
avg claims per patent
-58%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R16330 · Foreign Corporation #16,330 · 18 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-LOW · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

  • GRANTS-MICRO 18 grants
  • MID-PACK #16,330/49,997
  • PHOTO-FINISH Salvagnini Italia S…
  • CPC-NARROW G02B · 3 areas
  • INNOV-LOW 19.9/100
  • CLAIMS-SPARSE 6.0 claims/avg
  • TYPE-FRNCORP Foreign Corp
  • VEL-DROP -58% vel
  • BOOK-FULL 10/10 fields

Nearest grant-volume peer: Salvagnini Italia S.P.A. (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

How Sanwa’s 19.9 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Innovation-score neighbourhood around Sanwa

Lowest and highest poles plus nearest Innovation Score peers, not a full corpus board reprint.

score

What this shows Sanwa's Innovation Score is 19.9/100 (6th percentile of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Source USPTO PatentsView, PlainPatent Innovation Score As of 2015–2025

Does more volume mean deeper claims for Sanwa?

Each dot is one of Sanwa’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Sanwa’s own 6.0 claims/patent is at or below the 16.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Sanwa vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView. 2×2 strategic matrix plotting 9 entities by Granted patents (volume) (X) and Avg claims / patent (Y), with a crosshair dividing the plot into four quadrants. Volume + depthSelective & thoroughVolume over depthLean filer 17.917.91818.1 051015202530 Granted patents (volume) Avg claims / patent Salvagnini Italia S.P.A. - 18, 16.17Salvagnini Italia…Samsung Electro-mechanics Japan Advanced Technology Co., Ltd. - 18, 17.11Samsung Electro-m…SAN Ford Machinery Co., Ltd. - 18, 4.89SAN Ford MachinerySanofi Pasteur Biologics, LLC - 18, 20.72Sanofi Pasteur Bi…Schunk Kohlenstofftechnik GMBH - 18, 13Schunk Kohlenstof…Science House LLC - 18, 24.89Science HouseSCT Technology, Ltd. - 18, 11.94SCT TechnologySeegrid Corporation - 18, 16.89SeegridSanwa Denki Kogyo Co., Ltd. - 18, 6Sanwa Denki Kogyo
Sanwa vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Sanwa's grants concentrate

Sanwa Denki Kogyo Co., Ltd. is a focused PatentsView assignee: 3 CPC subclasses with 94.4% of grants classified under G02B (Optical Elements, Systems OR Apparatus). Peak complete grant year is 2016 (3 grants) versus a trough of 2 in 2015. By volume, Sanwa sits between Salvagnini Italia S.P.A. and Seegrid Corporation.

Who files at Sanwa's volume?

Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀

patents

What this shows Sanwa holds 18 patents at rank #16,326, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Source USPTO PatentsView, granted utility patents As of 2015–2025

Companies ranked near Sanwa

By rank, the assignees closest to #16,326 in granted patent volume.

Leaders in G02B (Optical Elements)

Other assignees with the most granted patents in Sanwa's primary technology class.

Sanwa's Innovation Score vs. every tracked assignee

Composite of portfolio volume, grant velocity, technology breadth, and claim depth (0–100)

20 6th percentile higher than 6% of 49,997 US assignees

This assignee 0 100 every tracked assignee, bucketed by value

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

0.511.522.533.5 20152016201720182019202020212025 1
USPTO utility patent grants by year · 2015–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table
Sanwa Denki Kogyo Co., Ltd. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2015 2 11.1%
2016 3 16.7%
2017 2 11.1%
2018 2 11.1%
2019 3 16.7%
2020 3 16.7%
2021 2 11.1%
2025partial year 1 5.6%

Which technologies does Sanwa Denki Kogyo Co., Ltd. patent most?

Top 3 of 3 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Sanwa Denki Kogyo Co., Ltd.'s patent record in context - here's where to go next.

  • Sanwa Denki Kogyo Co., Ltd.'s lead technology class is G02B (Optical Elements, Systems OR Apparatus), 94.4% of its portfolio - see every assignee active in that class. Explore G02B
  • Ranked #16,330 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
  • Compare Sanwa Denki Kogyo Co., Ltd. against Salvagnini Italia S.P.A., an assignee filing at a similar volume. Compare portfolios
  • Innovation Score of 19.9/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

Figures reflect USPTO PatentsView grant data through May 2026; pending applications not yet granted are not counted.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page
  • USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
  • Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
  • USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.