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

According to USPTO PatentsView (2015–2025 granted utility patents), Shinagawa Refractories Co., Ltd. ranks #25,209 of 50,000 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Shinagawa Refractories Co., Ltd. hold?

Shinagawa Refractories Co., Ltd. holds 11 US utility patents granted between 2015 and 2024, spanning 10 technology areas.

What is Shinagawa Refractories Co., Ltd.'s Innovation Score?

Shinagawa Refractories Co., Ltd. has an Innovation Score of 32.9 out of 100 (top 57% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Shinagawa Refractories Co., Ltd.'s recent grant velocity is -17% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Shinagawa Refractories Co., Ltd.'s patents?

Shinagawa Refractories Co., Ltd.'s patents average 7.1 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 Shinagawa Refractories 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

Shinagawa Refractories Co., Ltd.

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

Shinagawa Refractories Co., Ltd.'s top technology area is B22D (CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES) with 10 patents. Grants appear in 10 CPC subclasses total.

USPTO PatentsView assignee record - 11 granted patents across 10 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: B22D (CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES).

Compiled by PlainPatent · May 15, 2026

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Shinagawa ranks #25,209 of 50,000 tracked US assignees by granted-patent volume, with 11 patents across 10 technology areas.

#25,209
of 50,000 US assignees by volume: Top 57%
by Innovation Score (32.9/100): 7.1
avg claims per patent: -17%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R25209 · Foreign Corporation #25,209 · 11 grants

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

GRANTS-MICRO 11 grants
MID-PACK #25,209/50,000
PHOTO-FINISH SHENZHEN TRANSSION H…
CPC-FOCUS B22D · 10 areas
INNOV-THIN 32.9/100
CLAIMS-SPARSE 7.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -17% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Shenzhen Transsion Holdings 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.

Qualcomm Incorporated · highest

85
Shinagawa Refractories · this assignee

33
3D Lighting Innovati… · lowest

7

What this shows Shinagawa's Innovation Score is 32.9/100 (top 57% 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.

Where Shinagawa's grants concentrate

Shinagawa Refractories Co., Ltd. is a focused PatentsView assignee: 10 CPC subclasses with 90.9% of grants classified under B22D (CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES). Peak complete grant year is 2019 (2 grants) versus a trough of 1 in 2015. By volume, Shinagawa sits between Shenzhen Transsion Holdings Co., Ltd. and SI Analytics Co., Ltd..

Shinagawa's three-year grant acceleration

Shinagawa Refractories Co., Ltd. shows 4 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.

Shenzhen Transsio…

11
Shifukang Industr…

11
Shiloh Industries

11
SHIN ZU Shing

11
Shincron

11
Shire Viropharma

11
SHY Therapeutics

11
SI Analytics

11
Shinagawa Refract… ◀

11

What this shows Shinagawa holds 11 patents at rank #25,152, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Shinagawa

By rank, the assignees closest to #25,152 in granted patent volume.

Leaders in B22D (Casting OF Metals)

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

Shinagawa's Innovation Score vs. every tracked assignee

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

33 Top 57% higher than 43% 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

Shinagawa Refractories Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	9.1%
2016	1	9.1%
2017	1	9.1%
2018	1	9.1%
2019	2	18.2%
2020	1	9.1%
2023	2	18.2%
2024	2	18.2%

Which technologies does Shinagawa Refractories Co., Ltd. patent most?

B22D - CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 10

C21C - PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS 3

F27D - DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE 2

C04B - LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE ; CERAMICS ; REFRACTORIES; TREATMENT OF NATURAL STONE 2

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 2

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING 1

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 1

C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE 1

B22F - WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER ; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER 1

F27B - FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS 1

Top 10 of 10 technology areas

Where it ranks

Overall rank by patents

#25,209

of 50,000 tracked assignees

Innovation Score

32.9 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

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.