Where does Kelk Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Kelk Ltd. ranks #5,452 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 Kelk Ltd. hold?

Kelk Ltd. holds 63 US utility patents granted between 2015 and 2025, spanning 31 technology areas.

What is Kelk Ltd.'s Innovation Score?

Kelk Ltd. has an Innovation Score of 55.5 out of 100 (top 7% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Kelk Ltd. focus on?

Kelk Ltd.'s top technology area is H10N (Electric Solid-state Devices NOT Otherwise Provided FOR) with 38 patents, ranking #53 of 891 assignees active in that subclass. Grants appear in 31 CPC subclasses total.

Is Kelk Ltd.'s patent grant rate increasing or decreasing?

Kelk Ltd.'s recent grant velocity is +75% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Kelk Ltd.'s patents?

Kelk Ltd.'s patents average 10.0 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 Kelk Ltd. 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

Kelk Ltd.

USPTO PatentsView assignee record - 63 granted patents across 31 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: H10N (Electric Solid-state Devices NOT Otherwise Provided FOR).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Kelk ranks #5,452 of 49,997 tracked US assignees by granted-patent volume, with 63 patents across 31 technology areas.

#5,452
of 49,997 US assignees by volume: Top 7%
by Innovation Score (55.5/100): 10.0
avg claims per patent: +75%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R5452 · Foreign Corporation #5,452 · 63 grants

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

GRANTS-SMALL 63 grants
UPPER-Q #5,452/49,997
PHOTO-FINISH Iconex
CPC-FOCUS H10N · 31 areas
INNOV-PAR 55.5/100
CLAIMS-PAR 10.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +75% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Iconex LLC (±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 Kelk’s 55.5 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 14.4 pts (26%) Velocity 15.4 pts (28%) Breadth 19.7 pts (35%) Claim depth 6.0 pts (11%)

Qualcomm Incorporated · highest

85
Melexis · near

55
Yamazaki Mazak · near

55
Allergan · near

55
Hankook Tire &… · near

55
Kelk · this assignee

55
3D Lighting… · lowest

7

What this shows Kelk's Innovation Score is 55.5/100 (top 7% 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 Kelk?

Each dot is one of Kelk’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). Kelk’s own 10.0 claims/patent is at or below the 12.8 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Kelk's grants concentrate

Kelk Ltd. is a focused PatentsView assignee: 31 CPC subclasses with 60.3% of grants classified under H10N (Electric Solid-state Devices NOT Otherwise Provided FOR). Peak complete grant year is 2024 (17 grants) versus a trough of 2 in 2015. By volume, Kelk sits between Iconex LLC and OLogN Technologies AG.

Kelk's three-year grant acceleration

Kelk Ltd. shows 30 grants in 2022–2024 against only 13 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.

Iconex

63
Insight Direct USA

63
Jiangsu Contempor…

63
Jxtg Nippon OIL &…

63
Milestone Enterta…

63
Nationwide Mutual…

63
New Shicoh Motor

63
Ologn

63
Kelk ◀

63

What this shows Kelk holds 63 patents at rank #5,452, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Kelk

By rank, the assignees closest to #5,452 in granted patent volume.

Leaders in H10N (Electric Solid-state Devices)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Kelk, neither rank-band nor same-CPC leaders (those blocks stay above). In H10N (Electric Solid-state Devices), Kelk ranks #53 of 891 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (55 here).

Hankook Tire & Technology Co., Ltd. 55 Allergan, Inc. 55 Yamazaki Mazak Corporation 55 Melexis Technologies NV 55

Similar claim depth

Nearest assignees by average claims per patent (10.0 here).

Pro-iroda Industries, Inc. 10.0 avg The Braun Corporation 10.0 avg Syngenta Crop Protection AG 10.0 avg Kohler Co. 10.0 avg

Kelk's Innovation Score vs. every tracked assignee

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

55 Top 7% higher than 93% 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

Kelk Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	3.2%
2016	2	3.2%
2017	4	6.3%
2018	4	6.3%
2019	8	12.7%
2020	3	4.8%
2021	2	3.2%
2022	5	7.9%
2023	8	12.7%
2024	17	27.0%
2025partial year	8	12.7%

Which technologies does Kelk Ltd. patent most?

H10N - Electric Solid-state Devices NOT Otherwise Provided FOR 38

H01L - Semiconductor Devices NOT Covered BY Class H10 18

G05D - Systems FOR Controlling OR Regulating Non-electric Variables 10

F25B - Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems 8

H02N - Electric Machines NOT Otherwise Provided FOR 7

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 6

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 5

H01J - Electric Discharge Tubes OR Discharge Lamps 4

F24H - Fluid Heaters, e.g. Water OR AIR Heaters, Having Heat-generating Means, e.g. Heat Pumps, IN General 4

G01K - Measuring TEMPERATURE; Measuring Quantity OF HEAT; Thermally-sensitive Elements NOT Otherwise Provided FOR 3

F28D - Heat-exchange Apparatus, NOT Provided FOR IN Another Subclass, IN Which THE Heat-exchange Media DO NOT Come Into Direct Contact 3

B08B - Cleaning IN GENERAL; Prevention OF Fouling IN General 2

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 2

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 2

F28F - Details OF Heat-exchange AND Heat-transfer Apparatus, OF General Application 2

Top 15 of 31 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

Kelk Ltd.'s patent record in context - here's where to go next.

Kelk Ltd.'s lead technology class is H10N (Electric Solid-state Devices NOT Otherwise Provided FOR), 60.3% of its portfolio - see every assignee active in that class. Explore H10N
Ranked #5,452 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Kelk Ltd. against Iconex LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 55.5/100 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.