Where does Chian YIH Optotech Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Chian YIH Optotech Co., Ltd. ranks #25,990 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 Chian YIH Optotech Co., Ltd. hold?

Chian YIH Optotech Co., Ltd. holds 10 US utility patents granted between 2018 and 2024, spanning 7 technology areas.

What is Chian YIH Optotech Co., Ltd.'s Innovation Score?

Chian YIH Optotech Co., Ltd. has an Innovation Score of 32.5 out of 100 (top 59% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Chian YIH Optotech Co., Ltd.'s patent grant rate increasing or decreasing?

Chian YIH Optotech Co., Ltd.'s recent grant velocity is +133% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Chian YIH Optotech Co., Ltd.'s patents?

Chian YIH Optotech Co., Ltd.'s patents average 21.6 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 Chian YIH Optotech 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

Chian YIH Optotech Co., Ltd.

Q: What technology areas does Chian YIH Optotech Co., Ltd. focus on?

Chian YIH Optotech Co., Ltd.'s top technology area is F21S (NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS) with 10 patents. Grants appear in 7 CPC subclasses total.

USPTO PatentsView assignee record - 10 granted patents across 7 technology areas, recorded in grant years 2018–2024. 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: F21S (NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS).

Compiled by PlainPatent · May 15, 2026

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Chian ranks #25,990 of 50,000 tracked US assignees by granted-patent volume, with 10 patents across 7 technology areas.

#25,990
of 50,000 US assignees by volume: Top 59%
by Innovation Score (32.5/100): 21.6
avg claims per patent: +133%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R25990 · Foreign Corporation #25,990 · 10 grants

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

GRANTS-MICRO 10 grants
MID-PACK #25,990/50,000
PHOTO-FINISH CENTERLINE BIOMEDICAL
CPC-NARROW F21S · 7 areas
INNOV-THIN 32.5/100
CLAIMS-DENSE 21.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +133% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Centerline Biomedical, 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
Chian YIH Optotech · this assignee

33
3D Lighting Innovati… · lowest

7

What this shows Chian's Innovation Score is 32.5/100 (top 59% 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 Chian's grants concentrate

Chian YIH Optotech Co., Ltd. is a focused PatentsView assignee: 7 CPC subclasses with 100% of grants classified under F21S (NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS). Peak complete grant year is 2020 (4 grants) versus a trough of 1 in 2018. By volume, Chian sits between Centerline Biomedical, Inc. and Chromocell Corporation.

Chian's three-year grant acceleration

Chian YIH Optotech Co., Ltd. shows 2 grants in 2022–2024 against only 7 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.

Centerline Biomed…

10
Centre FOR Develo…

10
Chanel

10
Changwon National…

10
China Flash

10
Chiscan Holdings

10
CHOL

10
Chromocell

10
Chian YIH Optotech ◀

10

What this shows Chian holds 10 patents at rank #25,963, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Chian

By rank, the assignees closest to #25,963 in granted patent volume.

Leaders in F21S (Non-portable Lighting Devices)

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

Chian's Innovation Score vs. every tracked assignee

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

33 Top 59% higher than 41% 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 · 2018–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.

View data table

Chian YIH Optotech Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	1	10.0%
2019	2	20.0%
2020	4	40.0%
2021	1	10.0%
2023	1	10.0%
2024	1	10.0%

Which technologies does Chian YIH Optotech Co., Ltd. patent most?

F21S - NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS 10

F21W - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS 7

B60Q - ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL 6

F21V - FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR 2

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 2

B62J - CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS 2

F21Y - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED 2

Top 7 of 7 technology areas

Where it ranks

Overall rank by patents

#25,990

of 50,000 tracked assignees

Innovation Score

32.5 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.