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

According to USPTO PatentsView (2015–2025 granted utility patents), Dolphin Co., Ltd. ranks #46,211 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 Dolphin Co., Ltd. hold?

Dolphin Co., Ltd. holds 5 US utility patents granted between 2019 and 2022, spanning 4 technology areas.

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

Dolphin Co., Ltd. has an Innovation Score of 22.5 out of 100 (10th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Dolphin Co., Ltd.'s top technology area is G02B (Optical Elements, Systems OR Apparatus) with 5 patents. Grants appear in 4 CPC subclasses total.

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

Dolphin Co., Ltd.'s recent grant velocity is +300% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

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

Dolphin Co., Ltd.'s patents average 12.6 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 Dolphin 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

Dolphin Co., Ltd.

USPTO PatentsView assignee record - 5 granted patents across 4 technology areas, recorded in grant years 2019–2022. 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: G02B (Optical Elements, Systems OR Apparatus).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Dolphin ranks #46,211 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 4 technology areas.

#46,211
of 49,997 US assignees by volume: 10th percentile
by Innovation Score (22.5/100): 12.6
avg claims per patent: +300%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R46211 · Foreign Corporation #46,211 · 5 grants

GRANTS-MICRO · BOTTOM-DECILE · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 5 grants
BOTTOM-DECILE #46,211/49,997
PHOTO-FINISH DMetrix
CPC-NARROW G02B · 4 areas
INNOV-THIN 22.5/100
CLAIMS-RICH 12.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +300% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: DMetrix, 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
Dolphin · this assignee

22
3D Lighting… · lowest

7

What this shows Dolphin's Innovation Score is 22.5/100 (10th percentile 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 Dolphin's grants concentrate

Dolphin Co., Ltd. is a focused PatentsView assignee: 4 CPC subclasses with 100% of grants classified under G02B (Optical Elements, Systems OR Apparatus). Peak complete grant year is 2020 (3 grants) versus a trough of 1 in 2019. By volume, Dolphin sits between DMetrix, Inc. and Dong-a Flexible Metal Tubes Co., Ltd.

Dolphin's three-year grant acceleration

Dolphin Co., Ltd. shows 1 grants in 2022–2024 against only 4 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.

Dmetrix

5
Dnatrix

5
Document Security…

5
Doddle &

5
Dominant Opto SDN…

5
Donesta Bioscienc…

5
Dong Yang INK

5
Dong-a Flexible M…

5
Dolphin ◀

5

What this shows Dolphin holds 5 patents at rank #46,116, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Dolphin

By rank, the assignees closest to #46,116 in granted patent volume.

Leaders in G02B (Optical Elements)

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

Dolphin's Innovation Score vs. every tracked assignee

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

22 10th percentile higher than 10% 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 · 2019–2022

Grants by year

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

View data table

Dolphin Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2019	1	20.0%
2020	3	60.0%
2022	1	20.0%

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

G02B - Optical Elements, Systems OR Apparatus 5

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 5

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties 2

G01B - Measuring Length, Thickness OR Similar Linear DIMENSIONS; Measuring ANGLES; Measuring AREAS; Measuring Irregularities OF Surfaces OR Contours 2

Top 4 of 4 technology areas

Where it ranks

Overall rank by patents

#46,211

of 49,997 tracked assignees

Innovation Score

22.5 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

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

Dolphin Co., Ltd.'s lead technology class is G02B (Optical Elements, Systems OR Apparatus), 100% of its portfolio - see every assignee active in that class. Explore G02B
Ranked #46,211 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Dolphin Co., Ltd. against DMetrix, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 22.5/100 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.