Patents
US D638221 S1: Light and massage multi-therapy hairbrush
- Granted
- 2011-05-24
- Filed
- 2008-03-14 application 29305148
- Type
- Design · 1 claim
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Not reported
Source: PVGPATDIS, file of 2026-04-10 (ipg110524.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Headwaters, Inc. 19 patents | US company or organization | Ottawa, CA | HEADWATERS INC State business registration EXACT high confidence: identical full name and state HEADWATERS INC SEC filer EXACT medium confidence: identical full name, one of each nationally | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Bi-Chih Liao | Taoyuan, TW | 1 | PVGPATDIS, file of 2026-04-10 | |
| Rudy A. Vandenbell | Ottawa, CA | 3 | PVGPATDIS, file of 2026-04-10 |
CPC categories
No CPC categories reported.
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2009-01-18 | Assignment Nunc pro tunc assignment | VANDENBELT, RUDY signed 2009-01-15 LIAO, BI-CHIH signed 2009-01-16 | HEADWATERS R&D, INC. OTTAWA ONTARIO | 22123/215 | 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.