Where does Ketra, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Ketra, Inc. ranks #8,622 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 Ketra, Inc. hold?

Ketra, Inc. holds 37 US utility patents granted between 2015 and 2018, spanning 16 technology areas.

What is Ketra, Inc.'s Innovation Score?

Ketra, Inc. has an Innovation Score of 38.8 out of 100 (top 40% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Ketra, Inc.'s patent grant rate increasing or decreasing?

Ketra, Inc.'s recent grant velocity is -100% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Ketra, Inc.'s patents?

Ketra, Inc.'s patents average 20.2 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 Ketra, 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 US Corporation

Ketra, Inc.

Q: What technology areas does Ketra, Inc. focus on?

Ketra, Inc.'s top technology area is H05B (Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General) with 32 patents, ranking #119 of 2,247 assignees active in that subclass. Grants appear in 16 CPC subclasses total.

USPTO PatentsView assignee record - 37 granted patents across 16 technology areas, recorded in grant years 2015–2018. 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: H05B (Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Ketra ranks #8,622 of 49,997 tracked US assignees by granted-patent volume, with 37 patents across 16 technology areas.

#8,622
of 49,997 US assignees by volume: Top 40%
by Innovation Score (38.8/100): 20.2
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R8622 · US Corporation #8,622 · 37 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-DENSE · TYPE-USCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 37 grants
UPPER-Q #8,622/49,997
PHOTO-FINISH Kadtc Pet Supplies
CPC-FOCUS H05B · 16 areas
INNOV-THIN 38.8/100
CLAIMS-DENSE 20.2 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Kadtc Pet Supplies 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 Ketra’s 38.8 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 12.6 pts (32%) Velocity 0.0 pts (0%) Breadth 14.1 pts (36%) Claim depth 12.1 pts (31%)

Qualcomm Incorporated · highest

85
Easebon Services · near

39
United States… · near

39
Ketra · this assignee

39
Telefónica · near

39
DPG USA · near

39
3D Lighting… · lowest

7

What this shows Ketra's Innovation Score is 38.8/100 (top 40% 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 Ketra?

Each dot is one of Ketra’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). Ketra’s own 20.2 claims/patent is ABOVE the 15.5 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Ketra's grants concentrate

Ketra, Inc. is a focused PatentsView assignee: 16 CPC subclasses with 86.5% of grants classified under H05B (Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General). Peak complete grant year is 2016 (17 grants) versus a trough of 2 in 2018. By volume, Ketra sits between Klox Technologies Inc. and Leoni Bordnetz-Systeme GmbH.

Klox

37
Krosakiharima

37
Kadtc Pet Supplies

37
Karyopharm Therap…

37
Khalifa Universit…

37
Kite Pharma

37
Lensvector

37
Leoni Bordnetz-sy…

37
Ketra ◀

37

What this shows Ketra holds 37 patents at rank #8,624, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Ketra

By rank, the assignees closest to #8,624 in granted patent volume.

Leaders in H05B (Electric Heating)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Ketra, neither rank-band nor same-CPC leaders (those blocks stay above). In H05B (Electric Heating), Ketra ranks #119 of 2,247 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (39 here).

Telefónica, S.A 39 Easebon Services Limited 39 United States Endoscopy Group, Inc. 39 DPG USA Inc. 39

Ketra's Innovation Score vs. every tracked assignee

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

39 Top 40% higher than 60% 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 · 2015–2018

Grants by year

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

View data table

Ketra, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	8.1%
2016	17	45.9%
2017	15	40.5%
2018	2	5.4%

Which technologies does Ketra, Inc. patent most?

H05B - Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General 32

F21Y - Indexing Scheme Associated With Subclasses F21k, F21l, F21s and F21v, Relating TO THE Form OR THE Kind OF THE Light Sources OR OF THE Colour OF THE Light Emitted 10

F21V - Functional Features OR Details OF Lighting Devices OR Systems THEREOF; Structural Combinations OF Lighting Devices With Other Articles, NOT Otherwise Provided FOR 8

F21K - Non-electric Light Sources Using LUMINESCENCE; Light Sources Using ELECTROCHEMILUMINESCENCE; Light Sources Using Charges OF Combustible MATERIAL; Light Sources Using Semiconductor Devices AS Light-generating ELEMENTS; Light Sources NOT Otherwise Provided FOR 7

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 7

H04L - Transmission OF Digital Information, e.g. Telegraphic Communication 5

F21S - Non-portable Lighting DEVICES; Systems THEREOF; Vehicle Lighting Devices Specially Adapted FOR Vehicle Exteriors 4

G09G - Arrangements OR Circuits FOR Control OF Indicating Devices Using Static Means TO Present Variable Information 3

G01J - Measurement OF Intensity, Velocity, Spectral Content, Polarisation, Phase OR Pulse Characteristics OF Infrared, Visible OR Ultraviolet LIGHT; COLORIMETRY; Radiation Pyrometry 3

G01R - Measuring Electric VARIABLES; Measuring Magnetic Variables 3

H04B - Transmission 2

Y10S - Technical Subjects Covered BY Former Uspc Cross-reference ART Collections [XRACs] AND Digests 2

G08C - Transmission Systems FOR Measured Values, Control OR Similar Signals 1

G06F - Electric Digital Data Processing 1

H04W - Wireless Communication Networks 1

Top 15 of 16 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

Ketra, Inc.'s patent record in context - here's where to go next.

Ketra, Inc.'s lead technology class is H05B (Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General), 86.5% of its portfolio - see every assignee active in that class. Explore H05B
Ranked #8,622 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Ketra, Inc. against Klox Technologies Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 38.8/100 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.