USPTO 2015–2025 USPTO PatentsView Foreign Corporation

HOWA Plastics Co., Ltd.

USPTO PatentsView assignee record - 8 granted patents across 16 technology areas, active 2015–2023. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: B60H (ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

5.4

Avg claims per patent

+0%

5-year filing velocity

The verdict

HOWA holds 8 US patents across 16 technology areas, rank #31,900 of 50,000 tracked assignees.

#31,900
of 50,000 US assignees by volume: Top 24%
by Innovation Score (45.0/100): 5.4
avg claims per patent: +0%
filing velocity, last 5 yrs

Portfolio overview

HOWA Plastics Co., Ltd. has been granted 8 US utility patents between 2015 and 2023, placing HOWA Plastics Co., Ltd. at rank #31,900 across all assignees tracked by PlainPatent. This portfolio spans 16 distinct Cooperative Patent Classification (CPC) subclasses, averaging 5.4 claims per patent with primary concentration in B60H (ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES). As a Foreign Corporation, HOWA Plastics Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, HOWA sits between Honda Tsushin Kogyo Co., Ltd. (8 patents, rank #31,896) and HSEB Dresden Gmbh (8 patents, rank #31,904) - the closest US assignees by grant volume. The composite Innovation Score of 45.0/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 4 grants, compared with 4 in the 2015–2019 window, a +0% shift in five-year velocity. Steady filing volume suggests sustained innovation without dramatic pivots. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. HOWA Plastics Co., Ltd.'s 5.4 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 16 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark HOWA Plastics Co., Ltd. against peers pursuing similar technology classes.

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, filing velocity, technology breadth, and claim depth (0–100)

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

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

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Velocity Growing

Where it ranks

Overall rank by patents

#31,900

Across all tracked assignees

Innovation Score

45.0 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does HOWA Plastics Co., Ltd. hold?

HOWA Plastics Co., Ltd. holds 8 US granted patents filed 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. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

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. The company has filed patents in 16 CPC subclasses total.

Is HOWA Plastics Co., Ltd.'s patent filing rate increasing or decreasing?

HOWA Plastics Co., Ltd.'s recent filing velocity is +0% compared to the prior five-year period. The company is maintaining or growing its 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 relatively simple claim structure, typical for focused inventions.

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.

How to use this portfolio

HOWA's 8 grants land it in the top 24% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - HOWA ranks #31,900 of 50,000. Top 50 holders
Most of this portfolio concentrates in B60H - see who else leads that technology area. B60H leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team · 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.