Where does Keylex Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Keylex Corporation ranks #16,137 of 50,000 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Keylex Corporation hold?

Keylex Corporation holds 18 US utility patents granted between 2015 and 2024, spanning 20 technology areas.

What is Keylex Corporation's Innovation Score?

Keylex Corporation has an Innovation Score of 43.3 out of 100 (top 29% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Keylex Corporation's recent grant velocity is +57% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

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

Keylex Corporation's patents average 6.6 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 Keylex 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

Keylex Corporation

Q: What technology areas does Keylex Corporation focus on?

Keylex Corporation's top technology area is B23K (SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM) with 7 patents. Grants appear in 20 CPC subclasses total.

USPTO PatentsView assignee record - 18 granted patents across 20 technology areas, recorded in grant years 2015–2024. 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: B23K (SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM).

Compiled by PlainPatent · May 15, 2026

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Keylex ranks #16,137 of 50,000 tracked US assignees by granted-patent volume, with 18 patents across 20 technology areas.

#16,137
of 50,000 US assignees by volume: Top 29%
by Innovation Score (43.3/100): 6.6
avg claims per patent: +57%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R16137 · Foreign Corporation #16,137 · 18 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 18 grants
MID-PACK #16,137/50,000
PHOTO-FINISH Juntendo Educational…
CPC-FOCUS B23K · 20 areas
INNOV-PAR 43.3/100
CLAIMS-SPARSE 6.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +57% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Juntendo Educational Foundation (±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.

Qualcomm Incorporated · highest

85
Keylex · this assignee

43
3D Lighting Innovati… · lowest

7

What this shows Keylex Corporation stamps GRANTS-MICRO, MID-PACK, PHOTO-FINISH, CPC-FOCUS, INNOV-PAR, CLAIMS-SPARSE, TYPE-FRNCORP, VEL-SURGE, BOOK-FULL. Volume places it #16,137 of 50,000; Innovation Score 43.3/100 sits in the top 29% of the PatentsView-derived corpus. Closest grant-volume peer on this plate is Juntendo Educational Foundation (±0 grants).

Portfolio overview

Keylex Corporation has been granted 18 US utility patents between 2015 and 2024, placing Keylex Corporation at #16,137 of 50,000 across all assignees tracked by PlainPatent. This portfolio spans 20 distinct Cooperative Patent Classification (CPC) subclasses, averaging 6.6 claims per patent with primary concentration in B23K (SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM). As a Foreign Corporation, Keylex Corporation is one of the more focused assignees in the PatentsView dataset. By volume, Keylex sits between Juntendo Educational Foundation (18 patents, rank #16,130) and Kokido Development Limited (18 patents, rank #16,138) - the closest US assignees by grant volume. The composite Innovation Score of 43.3/100 blends portfolio volume, grant velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Grant cadence records the difference between two grant-year windows. Between 2020 and 2024 the company received 11 grants, compared with 7 in the 2015–2019 window, a +57% shift in five-year grant velocity. Both windows cover five complete grant years; the latest PatentsView year is a partial release and is excluded from this comparison, though it still appears in the yearly table and chart below. Grant timing can lag the related application by years, so this comparison does not establish current R&D spending, strategic intent, or a company’s application activity. The Foreign Corporation classification provides context for the assignee record, not a conclusion about its business strategy.

Claim depth and technology breadth describe this aggregate record. Keylex Corporation's 6.6 average claims per patent is an average count, not a measure of claim scope, legal strength, enforceability, or design-around risk. The record spans 20 CPC subclasses. Combined with portfolio volume, these figures let readers compare the documented grant records of assignees in similar technology classes.

Juntendo Educatio…

18
Kanagawa Universi…

18
Keter Luxembourg…

18
Kewpie

18
KGS Jewels

18
Kinova

18
KOGE Micro TECH

18
Kokido Development

18
Keylex ◀

18

What this shows Keylex holds 18 patents at rank #16,134, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Keylex

By rank, the assignees closest to #16,134 in granted patent volume.

Leaders in B23K (Soldering OR Unsoldering)

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

Keylex's Innovation Score vs. every tracked assignee

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

43 Top 29% higher than 71% of 50,000 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 · 2015–2024

Grants by year

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

View data table

Keylex Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	16.7%
2016	2	11.1%
2018	1	5.6%
2019	1	5.6%
2020	1	5.6%
2021	2	11.1%
2022	2	11.1%
2023	2	11.1%
2024	4	22.2%

Which technologies does Keylex Corporation patent most?

B23K - SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 7

B21D - WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL 3

F02M - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF 3

B60K - ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY 3

B22F - WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER ; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER 2

C22C - ALLOYS 2

H04N - PICTORIAL COMMUNICATION, e.g. TELEVISION 1

G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1

C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING 1

G10K - SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR 1

B60R - VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR 1

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 1

F02B - INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 1

G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS 1

G05B - CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 1

Top 15 of 20 technology areas

Where it ranks

Overall rank by patents

#16,137

of 50,000 tracked assignees

Innovation Score

43.3 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

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.