USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Nihon Parkerizing Co., Ltd.

USPTO PatentsView assignee record - 29 granted patents across 30 technology areas, active 2015–2024. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C23C (COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAP).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

9.7

Avg claims per patent

+42%

5-year filing velocity

The verdict

Nihon holds 29 US patents across 30 technology areas, rank #10,707 of 50,000 tracked assignees.

#10,707
of 50,000 US assignees by volume: Top 26%
by Innovation Score (44.2/100): 9.7
avg claims per patent: +42%
filing velocity, last 5 yrs

Portfolio overview

Nihon Parkerizing Co., Ltd. has been granted 29 US utility patents between 2015 and 2024, placing Nihon Parkerizing Co., Ltd. at rank #10,707 across all assignees tracked by PlainPatent. This portfolio spans 30 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.7 claims per patent with primary concentration in C23C (COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAP). As a Foreign Corporation, Nihon Parkerizing Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Nihon sits between Natural Extraction Systems, Llc (29 patents, rank #10,703) and Nubis Communications, Inc. (29 patents, rank #10,711) - the closest US assignees by grant volume. The composite Innovation Score of 44.2/100 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 17 grants, compared with 12 in the 2015–2019 window, a +42% 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. Nihon Parkerizing Co., Ltd.'s 9.7 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 30 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Nihon Parkerizing Co., Ltd. against peers pursuing similar technology classes.

Natural Extractio…

29
Natural Gas Solut…

29
Neurohabilitation

29
Nextinput

29
Ningbo Fotile Kit…

29
Northern Tool & E…

29
Novadaq ULC

29
Nubis Communicati…

29
Nihon Parkerizing ◀

29

What this shows Nihon holds 29 patents at rank #10,707, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Nihon

By rank, the assignees closest to #10,707 in granted patent volume.

Leaders in C23C (Coating Metallic Material)

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

Nihon's Innovation Score vs. every tracked assignee

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

44 Top 26% higher than 74% 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 · 2015–2024

Grants by year

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

View data table

Nihon Parkerizing Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	10.3%
2016	1	3.4%
2017	2	6.9%
2018	2	6.9%
2019	4	13.8%
2020	5	17.2%
2021	1	3.4%
2022	3	10.3%
2023	3	10.3%
2024	5	17.2%

Which technologies does Nihon Parkerizing Co., Ltd. patent most?

C23C - COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 20

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 16

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 8

B05D - PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL 7

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 7

C25D - PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR 5

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 3

C10M - LUBRICATING COMPOSITIONS ; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION 3

C22C - ALLOYS 3

C10N - INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS 3

F28F - DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 3

A61B - DIAGNOSIS; SURGERY; IDENTIFICATION 2

C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS 2

C09J - ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES 2

C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 2

Top 15 of 30 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Growing

Where it ranks

Overall rank by patents

#10,707

Across all tracked assignees

Innovation Score

44.2 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 Nihon Parkerizing Co., Ltd. hold?

Nihon Parkerizing Co., Ltd. holds 29 US granted patents filed between 2015 and 2024, spanning 30 technology areas.

What is Nihon Parkerizing Co., Ltd.'s Innovation Score?

Nihon Parkerizing Co., Ltd. has an Innovation Score of 44.2 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Nihon Parkerizing Co., Ltd. focus on?

Nihon Parkerizing Co., Ltd.'s top technology area is C23C (COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL) with 20 patents. The company has filed patents in 30 CPC subclasses total.

Is Nihon Parkerizing Co., Ltd.'s patent filing rate increasing or decreasing?

Nihon Parkerizing Co., Ltd.'s recent filing velocity is +42% compared to the prior five-year period. The company is maintaining or growing its patent output.

What does claim depth mean for Nihon Parkerizing Co., Ltd.'s patents?

Nihon Parkerizing Co., Ltd.'s patents average 9.7 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Nihon Parkerizing 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

Nihon's 29 grants land it in the top 26% 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 - Nihon ranks #10,707 of 50,000. Top 50 holders
Most of this portfolio concentrates in C23C - see who else leads that technology area. C23C 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.