Where does Howa Plastics Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Howa Plastics Co., Ltd. ranks #31,945 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 Howa Plastics Co., Ltd. hold?

Howa Plastics Co., Ltd. holds 8 US utility patents granted between 2015 and 2023, spanning 16 technology areas.

What is Howa Plastics Co., Ltd.'s Innovation Score?

Howa Plastics Co., Ltd. has an Innovation Score of 45.0 out of 100 (top 24% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Howa Plastics Co., Ltd.'s patent grant rate increasing or decreasing?

Howa Plastics Co., Ltd.'s recent grant velocity is +0% 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 Howa Plastics Co., Ltd.'s patents?

Howa Plastics Co., Ltd.'s patents average 5.4 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 Howa Plastics Co., 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

Howa Plastics Co., Ltd.

Q: What technology areas does Howa Plastics Co., Ltd. focus on?

Howa Plastics Co., Ltd.'s top technology area is B60H (Arrangements OF Heating, Cooling, Ventilating OR Other Air-treating Devices Specially Adapted FOR Passenger OR Goods Spaces OF Vehicles) with 6 patents, ranking #79 of 379 assignees active in that subclass. Grants appear in 16 CPC subclasses total.

USPTO PatentsView assignee record - 8 granted patents across 16 technology areas, recorded in grant years 2015–2023. 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: B60H (Arrangements OF Heating, Cooling, Ventilating OR Other Air-treating Devices Specially Adapted FOR Passenger OR Goods Spaces OF Vehicles).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Howa ranks #31,945 of 49,997 tracked US assignees by granted-patent volume, with 8 patents across 16 technology areas.

#31,945
of 49,997 US assignees by volume: Top 24%
by Innovation Score (45.0/100): 5.4
avg claims per patent: +0%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R31945 · Foreign Corporation #31,945 · 8 grants

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

GRANTS-MICRO 8 grants
MID-PACK #31,945/49,997
PHOTO-FINISH Honda Tsushin Kogyo
CPC-FOCUS B60H · 16 areas
INNOV-PAR 45.0/100
CLAIMS-SPARSE 5.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +0% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Honda Tsushin Kogyo 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 Howa’s 45.0 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 7.6 pts (17%) Velocity 20.0 pts (45%) Breadth 14.1 pts (31%) Claim depth 3.2 pts (7%)

Qualcomm Incorporated · highest

85
Howa Plastics · this assignee

45
3D Lighting… · lowest

7

What this shows Howa's Innovation Score is 45.0/100 (top 24% 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 Howa?

Each dot is one of Howa’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). Howa’s own 5.4 claims/patent is at or below the 13.0 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Howa's grants concentrate

Howa Plastics Co., Ltd. is a focused PatentsView assignee: 16 CPC subclasses with 75% of grants classified under B60H (Arrangements OF Heating, Cooling, Ventilating OR Other Air-treating Devices Specially Adapted FOR Passenger OR Goods Spaces OF Vehicles). Peak complete grant year is 2015 (2 grants) versus a trough of 1 in 2020. By volume, Howa sits between Honda Tsushin Kogyo Co., Ltd. and Hseb Dresden GmbH.

Howa's three-year grant acceleration

Howa Plastics Co., Ltd. shows 3 grants in 2022–2024 against only 1 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.

Honda Tsushin Kog…

8
Hoppecke Batterie…

8
Horiba France SAS

8
Hosokawa Alpine A…

8
HRM Enterprises

8
Hrst

8
HS Labs

8
Hseb Dresden

8
Howa Plastics ◀

8

What this shows Howa holds 8 patents at rank #31,900, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Howa

By rank, the assignees closest to #31,900 in granted patent volume.

Leaders in B60H (Arrangements OF Heating)

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

Howa's Innovation Score vs. every tracked assignee

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

45 Top 24% higher than 76% 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 · 2015–2023

Grants by year

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

View data table

Howa Plastics Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	25.0%
2018	2	25.0%
2020	1	12.5%
2022	2	25.0%
2023	1	12.5%

Which technologies does Howa Plastics Co., Ltd. patent most?

B60H - Arrangements OF Heating, Cooling, Ventilating OR Other Air-treating Devices Specially Adapted FOR Passenger OR Goods Spaces OF Vehicles 6

F24F - AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR Currents FOR Screening 4

Y10T - Technical Subjects Covered BY Former US Classification 2

B29L - Indexing Scheme Associated With Subclass B29c, Relating TO Particular Articles 1

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 1

F28F - Details OF Heat-exchange AND Heat-transfer Apparatus, OF General Application 1

B29K - Indexing Scheme Associated With Subclasses B29b, B29c OR B29d, Relating TO Moulding Materials OR TO Materials FOR ; Moulds, ; Reinforcements, Fillers OR Preformed Parts, e.g. Inserts 1

B05D - Processes FOR Applying Fluent Materials TO Surfaces, IN General 1

C09D - Coating Compositions, e.g. Paints, Varnishes OR LACQUERS; Filling PASTES; Chemical Paint OR INK REMOVERS; INKS; Correcting FLUIDS; WOODSTAINS; Pastes OR Solids FOR Colouring OR PRINTING; USE OF Materials Therefor 1

Y10S - Technical Subjects Covered BY Former Uspc Cross-reference ART Collections [XRACs] AND Digests 1

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 1

C08L - Compositions OF Macromolecular Compounds 1

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 1

B21C - Manufacture OF Metal Sheets, Wire, Rods, Tubes, Profiles OR Like Semi-manufactured Products Otherwise Than BY ROLLING; Auxiliary Operations Used IN Connection With Metal-working Without Essentially Removing Material 1

B21D - Working OR Processing OF Sheet Metal OR Metal Tubes, Rods OR Profiles Without Essentially Removing MATERIAL; Punching Metal 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

Howa Plastics Co., Ltd.'s patent record in context - here's where to go next.

Howa Plastics Co., Ltd.'s lead technology class is B60H (Arrangements OF Heating, Cooling, Ventilating OR Other Air-treating Devices Specially Adapted FOR Passenger OR Goods Spaces OF Vehicles), 75% of its portfolio - see every assignee active in that class. Explore B60H
Ranked #31,945 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Howa Plastics Co., Ltd. against Honda Tsushin Kogyo Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 45.0/100 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.