USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Hamamatsu Photonics K.k.

USPTO PatentsView assignee record - 1,615 granted patents across 125 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: G02B (OPTICAL ELEMENTS, SYSTEMS OR APPARATUS).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

1,615

Total patents granted

125

CPC technology areas

10.3

Avg claims per patent

+52%

5-year filing velocity

The verdict

Hamamatsu holds 1,615 US patents across 125 technology areas, rank #264 of 50,000 tracked assignees.

#264
of 50,000 US assignees by volume: Top 3%
by Innovation Score (62.1/100): 10.3
avg claims per patent: +52%
filing velocity, last 5 yrs

Portfolio overview

Hamamatsu Photonics K.k. has been granted 1,615 US utility patents between 2015 and 2025, placing Hamamatsu Photonics K.k. at rank #264 across all assignees tracked by PlainPatent. This portfolio spans 125 distinct Cooperative Patent Classification (CPC) subclasses, averaging 10.3 claims per patent with primary concentration in G02B (OPTICAL ELEMENTS, SYSTEMS OR APPARATUS). As a Foreign Corporation, Hamamatsu Photonics K.k. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Hamamatsu sits between NGK Insulators, Ltd. (1,631 patents, rank #260) and Henkel Ag & Co. Kgaa (1,592 patents, rank #268) - the closest US assignees by grant volume. The composite Innovation Score of 62.1/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 973 grants, compared with 642 in the 2015–2019 window, a +52% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Hamamatsu Photonics K.k.'s 10.3 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a diversified footprint across 100+ CPC subclasses spreads risk across many technology fronts. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Hamamatsu Photonics K.k. against peers pursuing similar technology classes.

NGK Insulators

1,631
Rambus

1,626
Stryker

1,619
Lenovo (Beijing)

1,618
Hamamatsu Photoni… ◀

1,615
Ecolab USA

1,610
Nitto Denko

1,608
Kohler

1,594
Henkel & Kgaa

1,592

What this shows Hamamatsu holds 1,615 patents at rank #264, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hamamatsu

By rank, the assignees closest to #264 in granted patent volume.

Leaders in G02B (Optical Elements)

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

Hamamatsu's Innovation Score vs. every tracked assignee

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

62 Top 3% higher than 97% 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

Hamamatsu Photonics K.k. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	118	7.3%
2016	118	7.3%
2017	120	7.4%
2018	119	7.4%
2019	167	10.3%
2020	198	12.3%
2021	186	11.5%
2022	140	8.7%
2023	130	8.0%
2024	178	11.0%
2025	141	8.7%

Which technologies does Hamamatsu Photonics K.k. patent most?

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 373

G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 339

G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY 253

H10F - INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION 237

H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 174

H01L - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10 156

H04N - PICTORIAL COMMUNICATION, e.g. TELEVISION 144

B23K - SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 132

G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION 131

H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL 115

G02F - OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS 101

A61B - DIAGNOSIS; SURGERY; IDENTIFICATION 84

B81B - MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES 74

G01R - MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 72

G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS 64

Top 15 of 125 technology areas

Patent Moat Analysis

Portfolio Volume Strong

Tech Breadth Diversified

Claim Depth Simple

Velocity Accelerating

Where it ranks

Overall rank by patents

#264

Across all tracked assignees

Innovation Score

62.1 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Hamamatsu Photonics K.k. hold?

Hamamatsu Photonics K.k. holds 1,615 US granted patents filed between 2015 and 2025, spanning 125 technology areas.

What is Hamamatsu Photonics K.k.'s Innovation Score?

Hamamatsu Photonics K.k. has an Innovation Score of 62.1 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Hamamatsu Photonics K.k. focus on?

Hamamatsu Photonics K.k.'s top technology area is G02B (OPTICAL ELEMENTS, SYSTEMS OR APPARATUS) with 373 patents. The company has filed patents in 125 CPC subclasses total.

Is Hamamatsu Photonics K.k.'s patent filing rate increasing or decreasing?

Hamamatsu Photonics K.k.'s recent filing velocity is +52% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for Hamamatsu Photonics K.k.'s patents?

Hamamatsu Photonics K.k.'s patents average 10.3 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Hamamatsu Photonics K.k. 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.

How to use this portfolio

Hamamatsu's 1,615 grants land it in the top 3% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Hamamatsu ranks #264 of 50,000. Top 50 holders
Most of this portfolio concentrates in G02B - see who else leads that technology area. G02B leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team · 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.