PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Keihin Ramtech Co., Ltd.

USPTO PatentsView assignee record - 5 granted patents across 4 technology areas, active 2020–2022. 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).

Explore the portfolio See the ranking
5
Total patents granted
4
CPC technology areas
5.0
Avg claims per patent
-
5-year filing velocity

The verdict

Keihin holds 5 US patents across 4 technology areas, rank #48,191 of 50,000 tracked assignees.

#48,191
of 50,000 US assignees by volume
Top 95%
by Innovation Score (17.9/100)
5.0
avg claims per patent

Portfolio overview

Keihin Ramtech Co., Ltd. has been granted 5 US utility patents between 2020 and 2022, placing Keihin Ramtech Co., Ltd. at rank #48,191 across all assignees tracked by PlainPatent. This portfolio spans 4 distinct Cooperative Patent Classification (CPC) subclasses, averaging 5.0 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, Keihin Ramtech Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Keihin sits between Kedlin Company Llc (5 patents, rank #48,187) and Kellogg North America Company (5 patents, rank #48,195) - the closest US assignees by grant volume. The composite Innovation Score of 17.9/100 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. Historical data spans 2020 through 2022, with 5 total grants over that period. Velocity comparisons require five years of historical filings to calibrate. 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. Keihin Ramtech Co., Ltd.'s 5.0 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while specialization in 4 subclasses reflects a tightly scoped invention area. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Keihin Ramtech Co., Ltd. against peers pursuing similar technology classes.

Who files at Keihin's volume?

Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀

patents

What this shows Keihin holds 5 patents at rank #48,191, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Source USPTO PatentsView, granted utility patents As of 2015–2025

Companies ranked near Keihin

By rank, the assignees closest to #48,191 in granted patent volume.

Leaders in C23C (Coating Metallic Material)

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

Keihin's Innovation Score vs. every tracked assignee

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

18 Top 95% higher than 5% of 50,000 US assignees

0–10: 687 US assignees (1%). Below this entry. 10–20: 2,527 US assignees (5%). This entry sits in this band. 20–30: 13,162 US assignees (26%). Above this entry. 30–40: 15,294 US assignees (31%). Above this entry. 40–50: 11,491 US assignees (23%). Above this entry. 50–60: 5,058 US assignees (10%). Above this entry. 60–70: 1,537 US assignees (3%). Above this entry. 70–80: 234 US assignees (0%). Above this entry. 80–90: 10 US assignees (0%). Above this entry. 90–100: 0 US assignees (0%). Above this entry. This assignee 0 100 every tracked assignee, bucketed by value

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

0.511.522.5 202020212022 1
USPTO utility patent grants by year · 2020–2022

Grants by year

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

View data table
Keihin Ramtech Co., Ltd. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2020 2 40.0%
2021 2 40.0%
2022 1 20.0%

Which technologies does Keihin Ramtech Co., Ltd. patent most?

Top 4 of 4 technology areas

Patent Moat Analysis

Portfolio Volume Light
Tech Breadth Specialized
Claim Depth Simple

Where it ranks

Overall rank by patents

#48,191

Across all tracked assignees

Innovation Score

17.9 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 Keihin Ramtech Co., Ltd. hold?
Keihin Ramtech Co., Ltd. holds 5 US granted patents filed between 2020 and 2022, spanning 4 technology areas.
What is Keihin Ramtech Co., Ltd.'s Innovation Score?
Keihin Ramtech Co., Ltd. has an Innovation Score of 17.9 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does Keihin Ramtech Co., Ltd. focus on?
Keihin Ramtech 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 5 patents. The company has filed patents in 4 CPC subclasses total.
Is Keihin Ramtech Co., Ltd.'s patent filing rate increasing or decreasing?
Insufficient historical data is available to calculate a velocity trend for Keihin Ramtech Co., Ltd..
What does claim depth mean for Keihin Ramtech Co., Ltd.'s patents?
Keihin Ramtech Co., Ltd.'s patents average 5.0 claims each. This is relatively simple claim structure, typical for focused inventions.
How is the Keihin Ramtech 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

Keihin's 5 grants land it in the top 95% 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 - Keihin ranks #48,191 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

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.