Patents
US 8755420 B2: Failure protection apparatus and system
- Granted
- 2014-06-17
- Filed
- 2008-06-11 application 12137452
- Type
- Utility · 17 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A safety and interlock circuit for use with devices which could cause injury if an error condition causes improper operation. A control program executing on a processor monitors a variety of device conditions, including pulse over-duration threshold, diode over-current threshold, pulse lock-out duration, temperature threshold, and pulse repetition frequency limit, and prevents the laser from firing if an error condition is detected. In addition, the error conditions are logged in a persistent memory to facilitate subsequent diagnosis and correction.
Source: PVGPATDIS, file of 2026-04-10 (ipg140617.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| TRIA BEAUTY, INC. 24 patents | US company or organization | Pleasanton, CA | TRIA BEAUTY, INC. State business registration EXACT high confidence: identical full name and state TRIA Beauty, Inc. Form D issuer EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Robert E. Grove | Pleasanton, CA | 15 | PVGPATDIS, file of 2026-04-10 | |
| Mark V. Weckwerth | Pleasanton, CA | 33 | PVGPATDIS, file of 2026-04-10 | |
| Tobin C. Island | Oakland, CA | 18 | PVGPATDIS, file of 2026-04-10 | |
| Harvey I-Heng Liu | Fremont, CA | 39 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| 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 | H01S5/06825 | PVGPATDIS, file of 2026-04-10 |
| A61B | Diagnosis; surgery; identification | A61B18/20 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2025-10-20 | Correction Corrective assignment to correct the patent number for one patent identified in the deed of assignment. one patent on the top of page 3 was identified incorrectly (the correct patent number is 9687671, not 9687651). the amended deed of assignment corrects this error. also attached to this corrective assignment is the previously recorded cover sheet containing the error, previously recorded on reel 72121 frame 256. assignor(s) hereby confirms the assignment of assignor's interest. | CHANNEL INVESTMENTS, LLC signed 2025-05-09 | AESTHETE HOLDING CORPORATION WILMINGTON, DE | 73686/429 | PASDL, file of 2026-10-15 |
| 2025-08-26 | Assignment Assignment of assignor's interest | CHANNEL INVESTMENTS, LLC signed 2025-05-09 | AESTHETE HOLDING CORPORATION WILMINGTON, DE | 72121/256 | PASDL, file of 2026-10-15 |
| 2017-05-03 | Assignment Assignment of assignor's interest | TRIA BEAUTY, INC. signed 2017-04-11 | CHANNEL INVESTMENTS, LLC TAMPA, FL | 42229/195 | PASDL, file of 2026-10-15 |
| 2013-07-03 | Security interest Security interest Notice of grant of security interest | TRIA BEAUTY, INC. signed 2013-07-02 | ATHYRIUM OPPORTUNITIES FUND (A) LP NEW YORK, NY | 30740/215 | PASDL, file of 2026-10-15 |
| 2012-02-03 | Correction Corrective assignment to correct the assignor previously recorded on reel 021459 frame 0358. assignor(s) hereby confirms the change of name. | SPECTRAGENICS, INC. signed 2008-07-31 | TRIA BEAUTY, INC. (CA) DUBLIN, CA | 27648/544 | ECORSEXC, file of 2026-09-25 |
| 2012-01-20 | Merger Merger | TRIA BEAUTY, INC. (CA) signed 2010-08-09 | TRIA BEAUTY, INC. (DE) DUBLIN, CA | 27570/856 | ECORSEXC, file of 2026-09-25 |
| 2008-08-28 | Name change Change of name | GROVE, ROBERT E. signed 2008-08-20 ISLAND, TOBIN C. signed 2008-08-20 LIU, HARVEY I. signed 2008-08-20 WECKWERTH, MARK V. signed 2008-08-20 | TRIA BEAUTY, INC. PLEASANTON, CA | 21459/358 | ECORSEXC, file of 2026-09-25 |
| 2008-08-28 | Assignment Assignment of assignor's interest | GROVE, ROBERT E. signed 2008-08-20 ISLAND, TOBIN C. signed 2008-08-20 LIU, HARVEY I. signed 2008-08-20 WECKWERTH, MARK V. signed 2008-08-20 | SPECTRAGENICS, INC. PLEASANTON, CA | 21458/872 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.