Where does CKD Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), CKD Corporation ranks #2,296 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 CKD Corporation hold?

CKD Corporation holds 170 US utility patents granted between 2015 and 2025, spanning 64 technology areas.

What is CKD Corporation's Innovation Score?

CKD Corporation has an Innovation Score of 53.3 out of 100 (top 9% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does CKD Corporation focus on?

CKD Corporation's top technology area is F16K (VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating) with 52 patents, ranking #24 of 1,836 assignees active in that subclass. Grants appear in 64 CPC subclasses total.

Is CKD Corporation's patent grant rate increasing or decreasing?

CKD Corporation's recent grant velocity is +48% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for CKD Corporation's patents?

CKD Corporation's patents average 9.7 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 CKD Corporation 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

CKD Corporation

USPTO PatentsView assignee record - 170 granted patents across 64 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: F16K (VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, CKD ranks #2,296 of 49,997 tracked US assignees by granted-patent volume, with 170 patents across 64 technology areas.

#2,296
of 49,997 US assignees by volume: Top 9%
by Innovation Score (53.3/100): 9.7
avg claims per patent: +48%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R2296 · Foreign Corporation #2,296 · 170 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-UP · BOOK-FULL

GRANTS-MID 170 grants
TOP-DECILE #2,296/49,997
PHOTO-FINISH Cyntec
CPC-WIDE F16K · 64 areas
INNOV-PAR 53.3/100
CLAIMS-PAR 9.7 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-UP +48% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Cyntec Co., Ltd. (±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 CKD’s 53.3 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 17.8 pts (33%) Velocity 4.8 pts (9%) Breadth 25.0 pts (47%) Claim depth 5.8 pts (11%)

Qualcomm Incorporated · highest

85
Bostik · near

53
CKD · this assignee

53
GONG io · near

53
Ping AN Technology… · near

53
Power Hero · near

53
3D Lighting… · lowest

7

What this shows CKD's Innovation Score is 53.3/100 (top 9% 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 CKD?

Each dot is one of CKD’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). CKD’s own 9.7 claims/patent is at or below the 15.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How CKD's grant cadence moved

Between 2020–2024, CKD Corporation received 92 grants versus 62 in 2015–2019 (+48% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2021 at 27 grants and bottomed in 2017 at 5. Lead class F16K accounts for 30.6% of the portfolio across 64 subclasses. Volume neighbours: Shanghai Zhaoxin Semiconductor Co., Ltd. (#2,292) and MetaSwitch Networks Ltd. (#2,300).

CKD's three-year grant acceleration

From 2019–2021 to 2022–2024, CKD Corporation moved from 64 to 46 grants (0.72x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #2,092. See the growth leaderboard.

Shanghai Zhaoxin…

171
TTI (Macao Commer…

171
Terra Nova Nurser…

171
U S Department of…

171
Cyntec

170
Energizer Brands

170
ITT Manufacturing…

170
Metaswitch Networ…

170
CKD ◀

170

What this shows CKD holds 170 patents at rank #2,296, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near CKD

By rank, the assignees closest to #2,296 in granted patent volume.

Leaders in F16K (Valves)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for CKD, neither rank-band nor same-CPC leaders (those blocks stay above). In F16K (Valves), CKD ranks #24 of 1,836 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (53 here).

Ping AN Technology (SHENZHEN) Co., Ltd. 53 Bostik SA 53 GONG.io Ltd. 53 Power Hero Corp. 53

Similar claim depth

Nearest assignees by average claims per patent (9.7 here).

Bayerische Motoren Werke Aktiengesellschaft 9.7 avg Sichuan University 9.7 avg Herman Miller, Inc. 9.6 avg Senju Metal Industry Co., Ltd. 9.7 avg

CKD's Innovation Score vs. every tracked assignee

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

53 Top 9% higher than 91% 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

CKD Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	11	6.5%
2016	18	10.6%
2017	5	2.9%
2018	10	5.9%
2019	18	10.6%
2020	19	11.2%
2021	27	15.9%
2022	17	10.0%
2023	13	7.6%
2024	16	9.4%
2025partial year	16	9.4%

Which technologies does CKD Corporation patent most?

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 52

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 36

G01B - Measuring Length, Thickness OR Similar Linear DIMENSIONS; Measuring ANGLES; Measuring AREAS; Measuring Irregularities OF Surfaces OR Contours 28

G06T - Image Data Processing OR Generation, IN General 24

B65B - Machines, Apparatus OR Devices FOR, OR Methods OF, Packaging Articles OR MATERIALS; Unpacking 20

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 12

F15B - Systems Acting BY Means OF Fluids IN GENERAL; Fluid-pressure Actuators, e.g. SERVOMOTORS; Details OF Fluid-pressure Systems, NOT Otherwise Provided FOR 11

H01L - Semiconductor Devices NOT Covered BY Class H10 10

Y10T - Technical Subjects Covered BY Former US Classification 10

G05D - Systems FOR Controlling OR Regulating Non-electric Variables 9

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 9

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 8

G01F - Measuring Volume, Volume Flow, Mass Flow OR Liquid LEVEL; Metering BY Volume 7

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties 6

H04N - Pictorial Communication, e.g. Television 6

Top 15 of 64 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

CKD Corporation's patent record in context - here's where to go next.

CKD Corporation's lead technology class is F16K (VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating), 30.6% of its portfolio - see every assignee active in that class. Explore F16K
Ranked #2,296 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare CKD Corporation against Shanghai Zhaoxin Semiconductor Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 53.3/100 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.