Where does K. Hartwell Oy Ab rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), K. Hartwell Oy Ab ranks #48,042 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 K. Hartwell Oy Ab hold?

K. Hartwell Oy Ab holds 5 US utility patents granted between 2015 and 2018, spanning 3 technology areas.

What is K. Hartwell Oy Ab's Innovation Score?

K. Hartwell Oy Ab has an Innovation Score of 14.8 out of 100 (3rd percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does K. Hartwell Oy Ab focus on?

K. Hartwell Oy Ab's top technology area is B62D (Motor VEHICLES; Trailers) with 1 patents, ranking #911 of 1,368 assignees active in that subclass. Grants appear in 3 CPC subclasses total.

Is K. Hartwell Oy Ab's patent grant rate increasing or decreasing?

K. Hartwell Oy Ab'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 K. Hartwell Oy Ab's patents?

K. Hartwell Oy Ab's patents average 4.2 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 K. Hartwell Oy Ab 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

K. Hartwell Oy Ab

USPTO PatentsView assignee record - 5 granted patents across 3 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: B62D (Motor VEHICLES; Trailers).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, K. ranks #48,042 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 3 technology areas.

#48,042
of 49,997 US assignees by volume: 3rd percentile
by Innovation Score (14.8/100): 4.2
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R48042 · Foreign Corporation #48,042 · 5 grants

GRANTS-MICRO · BOTTOM-DECILE · PHOTO-FINISH · CPC-NARROW · INNOV-LOW · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 5 grants
BOTTOM-DECILE #48,042/49,997
PHOTO-FINISH K Eklund Innovation
CPC-NARROW B62D · 3 areas
INNOV-LOW 14.8/100
CLAIMS-SPARSE 4.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: K. Eklund Innovation (±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 K.’s 14.8 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 6.2 pts (42%) Velocity 0.0 pts (0%) Breadth 6.1 pts (41%) Claim depth 2.5 pts (17%)

Qualcomm Incorporated · highest

85
K Hartwell Oy Ab · this assignee

15
3D Lighting… · lowest

7

What this shows K.'s Innovation Score is 14.8/100 (3rd percentile 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 K.?

Each dot is one of K.’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). K.’s own 4.2 claims/patent is at or below the 10.8 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where K.'s grants concentrate

K. Hartwell Oy Ab is a focused PatentsView assignee: 3 CPC subclasses with 20% of grants classified under B62D (Motor VEHICLES; Trailers). Peak complete grant year is 2016 (2 grants) versus a trough of 1 in 2015. By volume, K. sits between K&W Tools Co., Ltd. and Kaba GALLENSCHÜTZ GMBH.

K&W Tools

5
K'nex Partnership…

5
K-lab

5
K Eklund Innovati…

5
K D W

5
K K Sun Metalon

5
Kaatsu Japan

5
Kaba GallenschÜTZ

5
K Hartwell Oy Ab ◀

5

What this shows K. holds 5 patents at rank #48,050, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near K

By rank, the assignees closest to #48,050 in granted patent volume.

Leaders in B62D (Motor Vehicles)

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

K.'s Innovation Score vs. every tracked assignee

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

15 3rd percentile higher than 3% 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

K. Hartwell Oy Ab patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	20.0%
2016	2	40.0%
2017	1	20.0%
2018	1	20.0%

Which technologies does K. Hartwell Oy Ab patent most?

B62D - Motor VEHICLES; Trailers 1

B62B - Hand-propelled Vehicles, e.g. Hand Carts OR PERAMBULATORS; Sledges 1

B60D - Vehicle Connections 1

Top 3 of 3 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

K. Hartwell Oy Ab's patent record in context - here's where to go next.

K. Hartwell Oy Ab's lead technology class is B62D (Motor VEHICLES; Trailers), 20% of its portfolio - see every assignee active in that class. Explore B62D
Ranked #48,042 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare K. Hartwell Oy Ab against K&W Tools Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 14.8/100 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.