Where does Sunstar Engineering Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Sunstar Engineering Inc. ranks #9,631 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Sunstar Engineering Inc. hold?

Sunstar Engineering Inc. holds 33 US utility patents granted between 2015 and 2025, spanning 33 technology areas.

What is Sunstar Engineering Inc.'s Innovation Score?

Sunstar Engineering Inc. has an Innovation Score of 46.5 out of 100 (top 21% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Sunstar Engineering Inc. focus on?

Sunstar Engineering Inc.'s top technology area is F16D (Couplings FOR Transmitting ROTATION; CLUTCHES; Brakes) with 9 patents, ranking #164 of 1,090 assignees active in that subclass. Grants appear in 33 CPC subclasses total.

Is Sunstar Engineering Inc.'s patent grant rate increasing or decreasing?

Sunstar Engineering Inc.'s recent grant velocity is +400% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Sunstar Engineering Inc.'s patents?

Sunstar Engineering Inc.'s patents average 8.2 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

How is the Sunstar Engineering Inc. patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Sunstar Engineering Inc.

USPTO PatentsView assignee record - 33 granted patents across 33 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: F16D (Couplings FOR Transmitting ROTATION; CLUTCHES; Brakes).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Sunstar ranks #9,631 of 49,997 tracked US assignees by granted-patent volume, with 33 patents across 33 technology areas.

#9,631
of 49,997 US assignees by volume: Top 21%
by Innovation Score (46.5/100): 8.2
avg claims per patent: +400%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R9631 · Foreign Corporation #9,631 · 33 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-SMALL 33 grants
UPPER-Q #9,631/49,997
PHOTO-FINISH Safran Cabin
CPC-FOCUS F16D · 33 areas
INNOV-PAR 46.5/100
CLAIMS-PAR 8.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +400% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Safran Cabin Inc. (±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 Sunstar’s 46.5 Innovation Score adds up

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

Volume 12.2 pts (26%) Velocity 9.1 pts (20%) Breadth 20.3 pts (44%) Claim depth 4.9 pts (11%)

Qualcomm Incorporated · highest

85
Infineum International · near

46
Newport · near

46
Sercomm · near

46
Sunstar Engineering · this assignee

46
United Airlines · near

46
3D Lighting… · lowest

7

What this shows Sunstar's Innovation Score is 46.5/100 (top 21% 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.

Does more volume mean deeper claims for Sunstar?

Each dot is one of Sunstar’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). Sunstar’s own 8.2 claims/patent is at or below the 14.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Sunstar vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Sunstar's grants concentrate

Sunstar Engineering Inc. is a focused PatentsView assignee: 33 CPC subclasses with 27.3% of grants classified under F16D (Couplings FOR Transmitting ROTATION; CLUTCHES; Brakes). Peak complete grant year is 2021 (7 grants) versus a trough of 1 in 2018. By volume, Sunstar sits between SLT Technologies, Inc. and San Diego Gas & Electric Company.

Sunstar's three-year grant acceleration

Sunstar Engineering Inc. shows 15 grants in 2022–2024 against only 11 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

SLT

33
Softbank Robotics…

33
Spogen Biotech

33
STM Management Pty

33
Syneron Medical

33
Safran Cabin

33
Salzgitter Flachs…

33
San Diego Gas & E…

33
Sunstar Engineeri… ◀

33

What this shows Sunstar holds 33 patents at rank #9,616, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Sunstar

By rank, the assignees closest to #9,616 in granted patent volume.

Leaders in F16D (Couplings FOR Transmitting Rotation)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Sunstar, neither rank-band nor same-CPC leaders (those blocks stay above). In F16D (Couplings FOR Transmitting Rotation), Sunstar ranks #164 of 1,090 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (46 here).

Newport Corporation 46 United Airlines, Inc. 46 Sercomm Corporation 46 Infineum International Limited 46

Sunstar's Innovation Score vs. every tracked assignee

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

46 Top 21% higher than 79% of 49,997 US assignees

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

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

Sunstar Engineering Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	9.1%
2018	1	3.0%
2019	1	3.0%
2020	3	9.1%
2021	7	21.2%
2022	5	15.2%
2023	5	15.2%
2024	5	15.2%
2025partial year	3	9.1%

Which technologies does Sunstar Engineering Inc. patent most?

F16D - Couplings FOR Transmitting ROTATION; CLUTCHES; Brakes 9

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 8

C09J - ADHESIVES; Non-mechanical Aspects OF Adhesive Processes IN GENERAL; Adhesive Processes NOT Provided FOR ELSEWHERE; USE OF Materials AS Adhesives 7

C08L - Compositions OF Macromolecular Compounds 4

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 3

F16H - Gearing 3

E04F - Finishing Work ON Buildings, e.g. Stairs, Floors 2

C09D - Coating Compositions, e.g. Paints, Varnishes OR LACQUERS; Filling PASTES; Chemical Paint OR INK REMOVERS; INKS; Correcting FLUIDS; WOODSTAINS; Pastes OR Solids FOR Colouring OR PRINTING; USE OF Materials Therefor 2

B62L - Brakes Specially Adapted FOR Cycles 2

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 2

A61L - Methods OR Apparatus FOR Sterilising Materials OR Objects IN GENERAL; Disinfection, Sterilisation OR Deodorisation OF AIR; Chemical Aspects OF Bandages, Dressings, Absorbent Pads OR Surgical ARTICLES; Materials FOR Bandages, Dressings, Absorbent Pads OR Surgical Articles 2

B29C - Shaping OR Joining OF PLASTICS; Shaping OF Material IN A Plastic State, NOT Otherwise Provided FOR; After-treatment OF THE Shaped Products, e.g. Repairing 2

B29K - Indexing Scheme Associated With Subclasses B29b, B29c OR B29d, Relating TO Moulding Materials OR TO Materials FOR ; Moulds, ; Reinforcements, Fillers OR Preformed Parts, e.g. Inserts 2

B01F - Mixing, e.g. Dissolving, Emulsifying OR Dispersing 2

B21D - Working OR Processing OF Sheet Metal OR Metal Tubes, Rods OR Profiles Without Essentially Removing MATERIAL; Punching Metal 1

Top 15 of 33 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

Sunstar Engineering Inc.'s patent record in context - here's where to go next.

Sunstar Engineering Inc.'s lead technology class is F16D (Couplings FOR Transmitting ROTATION; CLUTCHES; Brakes), 27.3% of its portfolio - see every assignee active in that class. Explore F16D
Ranked #9,631 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Sunstar Engineering Inc. against SLT Technologies, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 46.5/100 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

Compiled by PlainPatent, US Patent Intelligence Editorial Process · May 15, 2026

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.