Hamamatsu Photonics K.K.
73 live US trademarks, filing since 1975.
Marks held on the register, by filing date. 2026 is year to date.
A multi-class mark counts once per class. Rank shown where the owner is in the class's top 50.
What Hamamatsu Photonics K.K. filed most recently.
| Mark | Class | Filed | Basis | Status | Serial |
|---|---|---|---|---|---|
| ISKA | 9 | Nov 6, 2025 | — | published | 99482510 |
| LQ LYNQS | 9, 42 | Sep 5, 2025 | — | pending | 99377653 |
| C LAMBDA CAPTURE | 9 | Jan 31, 2025 | — | registered Jan 6 | 99025747 |
| X | 9, 10, 42 | Nov 20, 2024 | — | registered Jan 13 | 98863463 |
| THERMODYNAMIC | 9 | Jun 27, 2024 | — | registered Oct 28 | 98622531 |
| HYPERGAUGE | 9 | Jun 18, 2024 | — | registered Sep 9 | 98605923 |
| HAMASPEC | 9 | May 23, 2024 | — | registered Apr 29 | 98565670 |
| E- | 9 | May 14, 2024 | — | registered Jan 6 | 98550597 |
| HYPEREON | 9 | May 14, 2024 | — | published | 98550601 |
| P2D2 | 11 | Apr 10, 2024 | — | registered May 6 | 98493317 |
Registration starts the maintenance clock: a Section 8 declaration is due between years 5 and 6.
A filing missed by the due date enters a six-month grace period, then the registration cancels.
Recorded as the nightly register update observes them. A cancelled or expired mark no longer blocks a new filing of the same name.
About Hamamatsu Photonics K.K. trademarks.
How many trademarks does Hamamatsu Photonics K.K. have?
73 live US trademarks as of October 23, 2026: 70 registered and 3 pending applications. None have been filed in 2026 so far.
What does Hamamatsu Photonics K.K. sell, according to its trademarks?
Mostly electronics & software (Class 9, 59 live marks). Also medical devices (Class 10) and appliances & lighting (Class 11).
Who owns the HTV trademark?
HTV is owned by Hamamatsu Photonics K.K.. It was registered on May 10, 1977 (Reg. No. 1065199) and is live. The same owner holds 72 other live US marks.
When did Hamamatsu Photonics K.K. first file a trademark?
Its oldest live US filing dates from 1975: HTV, filed April 25, 1975.
Know the morning after Hamamatsu Photonics K.K. files.
Watch this company in Thorgate and get an alert for every new application, registration, publication and lapse, with the opposition deadline already worked out. Or monitor your own marks for conflicts with theirs.
Data: USPTO trademark bulk files, processed nightly by Thorgate. Last rebuilt October 23, 2026. Counts cover the US federal register only, not state or foreign marks. Owner names are shown as recorded by the USPTO. This page reports public-record facts and dates and is not legal advice. For the official record of any mark, follow its serial number to USPTO TSDR.