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

According to USPTO PatentsView (2015–2025 granted utility patents), CAST Co., Ltd. ranks #13,348 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 CAST Co., Ltd. hold?

CAST Co., Ltd. holds 22 US utility patents granted between 2015 and 2025, spanning 25 technology areas.

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

CAST Co., Ltd. has an Innovation Score of 49.4 out of 100 (top 15% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does CAST Co., Ltd. focus on?

CAST Co., Ltd.'s top technology area is H04N (PICTORIAL COMMUNICATION, e.g. TELEVISION) with 11 patents. Grants appear in 25 CPC subclasses total.

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

CAST Co., Ltd.'s recent grant velocity is +63% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

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

CAST Co., Ltd.'s patents average 17.1 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 CAST 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

CAST Co., Ltd.

USPTO PatentsView assignee record - 22 granted patents across 25 technology areas, recorded in grant years 2015–2025. 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: H04N (PICTORIAL COMMUNICATION, e.g. TELEVISION).

Compiled by PlainPatent · May 15, 2026

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, CAST ranks #13,348 of 50,000 tracked US assignees by granted-patent volume, with 22 patents across 25 technology areas.

#13,348
of 50,000 US assignees by volume: Top 15%
by Innovation Score (49.4/100): 17.1
avg claims per patent: +63%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R13348 · Foreign Corporation #13,348 · 22 grants

GRANTS-SMALL · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-SMALL 22 grants
MID-PACK #13,348/50,000
PHOTO-FINISH Burris
CPC-FOCUS H04N · 25 areas
INNOV-PAR 49.4/100
CLAIMS-RICH 17.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +63% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Burris Company, Inc. (±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
CAST · this assignee

49
3D Lighting Innovati… · lowest

7

What this shows CAST Co., Ltd. stamps GRANTS-SMALL, MID-PACK, PHOTO-FINISH, CPC-FOCUS, INNOV-PAR, CLAIMS-RICH, TYPE-FRNCORP, VEL-SURGE, BOOK-FULL. Volume places it #13,348 of 50,000; Innovation Score 49.4/100 sits in the top 15% of the PatentsView-derived corpus. Closest grant-volume peer on this plate is Burris Company, Inc. (±0 grants).

Portfolio overview

CAST Co., Ltd. has been granted 22 US utility patents between 2015 and 2025, placing CAST Co., Ltd. at #13,348 of 50,000 across all assignees tracked by PlainPatent. This portfolio spans 25 distinct Cooperative Patent Classification (CPC) subclasses, averaging 17.1 claims per patent with primary concentration in H04N (PICTORIAL COMMUNICATION, e.g. TELEVISION). As a Foreign Corporation, CAST Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, CAST sits between Burris Company, Inc. (22 patents, rank #13,340) and Changs Ascending Enterprise Co., Ltd. (22 patents, rank #13,348) - the closest US assignees by grant volume. The composite Innovation Score of 49.4/100 blends portfolio volume, grant velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Grant cadence records the difference between two grant-year windows. Between 2020 and 2024 the company received 13 grants, compared with 8 in the 2015–2019 window, a +63% shift in five-year grant velocity. Both windows cover five complete grant years; the latest PatentsView year is a partial release and is excluded from this comparison, though it still appears in the yearly table and chart below. Grant timing can lag the related application by years, so this comparison does not establish current R&D spending, strategic intent, or a company’s application activity. The Foreign Corporation classification provides context for the assignee record, not a conclusion about its business strategy.

Claim depth and technology breadth describe this aggregate record. CAST Co., Ltd.'s 17.1 average claims per patent is an average count, not a measure of claim scope, legal strength, enforceability, or design-around risk. The record spans 25 CPC subclasses. Combined with portfolio volume, these figures let readers compare the documented grant records of assignees in similar technology classes.

Burris

22
C-sky Microsystems

22
C R Laurence

22
CARL Zeiss Medite…

22
Cefla Societa' Co…

22
Celloptic

22
CF Traverse

22
Changs Ascending…

22
CAST ◀

22

What this shows CAST holds 22 patents at rank #13,344, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near CAST

By rank, the assignees closest to #13,344 in granted patent volume.

Leaders in H04N (Pictorial Communication)

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

CAST's Innovation Score vs. every tracked assignee

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

49 Top 15% higher than 85% 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 · 2015–2025

Grants by year

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

View data table

CAST Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	9.1%
2016	2	9.1%
2017	4	18.2%
2020	2	9.1%
2021	3	13.6%
2022	1	4.5%
2023	5	22.7%
2024	2	9.1%
2025partial year	1	4.5%

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

H04N - PICTORIAL COMMUNICATION, e.g. TELEVISION 11

G06T - IMAGE DATA PROCESSING OR GENERATION, IN GENERAL 8

G01S - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES 7

G06F - ELECTRIC DIGITAL DATA PROCESSING 6

G05B - CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 5

H05B - ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL 4

G03B - APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR 3

B25J - MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES 3

Y02B - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS 3

B01D - SEPARATION 2

A61L - METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES 2

H05H - PLASMA TECHNIQUE ; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS 2

G09G - ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION 2

G08C - TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS 2

H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY 2

Top 15 of 25 technology areas

Where it ranks

Overall rank by patents

#13,348

of 50,000 tracked assignees

Innovation Score

49.4 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.