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

According to USPTO PatentsView (2015–2025 granted utility patents), Topura Co., Ltd. ranks #21,923 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 Topura Co., Ltd. hold?

Topura Co., Ltd. holds 13 US utility patents granted between 2015 and 2024, spanning 8 technology areas.

What is Topura Co., Ltd.'s Innovation Score?

Topura Co., Ltd. has an Innovation Score of 36.1 out of 100 (top 47% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Topura Co., Ltd.'s recent grant velocity is +17% 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 Topura Co., Ltd.'s patents?

Topura Co., Ltd.'s patents average 9.8 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 Topura 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

Topura Co., Ltd.

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

Topura Co., Ltd.'s top technology area is F16B (Devices FOR Fastening OR Securing Constructional Elements OR Machine Parts Together, e.g. Nails, Bolts, Circlips, Clamps, Clips OR WEDGES; Joints OR Jointing) with 13 patents, ranking #86 of 2,095 assignees active in that subclass. Grants appear in 8 CPC subclasses total.

USPTO PatentsView assignee record - 13 granted patents across 8 technology areas, recorded in grant years 2015–2024. 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: F16B (Devices FOR Fastening OR Securing Constructional Elements OR Machine Parts Together, e.g. Nails, Bolts, Circlips, Clamps, Clips OR WEDGES; Joints OR Jointing).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Topura ranks #21,923 of 49,997 tracked US assignees by granted-patent volume, with 13 patents across 8 technology areas.

#21,923
of 49,997 US assignees by volume: Top 47%
by Innovation Score (36.1/100): 9.8
avg claims per patent: +17%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R21923 · Foreign Corporation #21,923 · 13 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-UP · BOOK-FULL

GRANTS-MICRO 13 grants
MID-PACK #21,923/49,997
PHOTO-FINISH TOA
CPC-NARROW F16B · 8 areas
INNOV-THIN 36.1/100
CLAIMS-PAR 9.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-UP +17% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: TOA Corporation (±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 Topura’s 36.1 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 9.1 pts (25%) Velocity 11.1 pts (31%) Breadth 10.0 pts (28%) Claim depth 5.9 pts (16%)

Qualcomm Incorporated · highest

85
Topura · this assignee

36
3D Lighting… · lowest

7

What this shows Topura's Innovation Score is 36.1/100 (top 47% 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 Topura?

Each dot is one of Topura’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). Topura’s own 9.8 claims/patent is at or below the 11.0 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Topura's grants concentrate

Topura Co., Ltd. is a focused PatentsView assignee: 8 CPC subclasses with 100% of grants classified under F16B (Devices FOR Fastening OR Securing Constructional Elements OR Machine Parts Together, e.g. Nails, Bolts, Circlips, Clamps, Clips OR WEDGES; Joints OR Jointing). Peak complete grant year is 2015 (2 grants) versus a trough of 1 in 2016. By volume, Topura sits between TOA Corporation and TPR Industry Co., Ltd..

Topura's three-year grant acceleration

Topura Co., Ltd. shows 5 grants in 2022–2024 against only 3 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.

TOA

13
Tobacco Research…

13
TOK

13
Tomita Pharmaceut…

13
Total Raffinage F…

13
Toyo System

13
TPK Touch Systems…

13
TPR Industry

13
Topura ◀

13

What this shows Topura holds 13 patents at rank #21,892, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Topura

By rank, the assignees closest to #21,892 in granted patent volume.

Leaders in F16B (Devices FOR Fastening OR Securing Constructional Elements…)

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

Topura's Innovation Score vs. every tracked assignee

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

36 Top 47% higher than 53% 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 · 2015–2024

Grants by year

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

View data table

Topura Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	15.4%
2016	1	7.7%
2017	2	15.4%
2019	1	7.7%
2021	2	15.4%
2022	1	7.7%
2023	2	15.4%
2024	2	15.4%

Which technologies does Topura Co., Ltd. patent most?

F16B - Devices FOR Fastening OR Securing Constructional Elements OR Machine Parts Together, e.g. Nails, Bolts, Circlips, Clamps, Clips OR WEDGES; Joints OR Jointing 13

C22F - Changing THE Physical Structure OF Non-ferrous Metals AND Non-ferrous Alloys 2

B21H - Making Particular Metal Objects BY Rolling, e.g. Screws, Wheels, Rings, Barrels, Balls 2

C22C - Alloys 2

B23G - Thread CUTTING; Working OF Screws, Bolt Heads, OR Nuts, IN Conjunction Therewith 1

B21K - Making Forged OR Pressed Metal Products, e.g. Horse-shoes, Rivets, Bolts OR Wheels 1

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

C10M - Lubricating Compositions ; USE OF Chemical Substances Either Alone OR AS Lubricating Ingredients IN A Lubricating Composition 1

Top 8 of 8 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

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

Topura Co., Ltd.'s lead technology class is F16B (Devices FOR Fastening OR Securing Constructional Elements OR Machine Parts Together, e.g. Nails, Bolts, Circlips, Clamps, Clips OR WEDGES; Joints OR Jointing), 100% of its portfolio - see every assignee active in that class. Explore F16B
Ranked #21,923 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Topura Co., Ltd. against TOA Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 36.1/100 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.