US4572222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of flexible abrasive pad for wet etching of fingernails
Assignee: Individual
•
Filing: 1982-08-13
•
Granted: 1986-02-25
•
Expires: 2002-08-13
Abstract
Abstract The method of wet etching a natural or artificial fingernail, that includes: (a) providing a tough, flexible sheet of silicone polymer, the sheet carrying abrasive particulate protruding from at least one side of the sheet, and (b) rubbing a side of the wet sheet against the surface of the wet fingernail.
Inventors
- 👤 William E. Pangburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:08
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/54; B; B24; B24D; B24D15/00; B24D15/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
98 words
A flexible cosmetic abrasive sheet suitable for wet etching a natural or artificial fingernail, by rubbing contact therewith, that comprises (a) a tough, flexible, thin, foldable and stretchable pad of silicone polymer, and (b) abrasive pumice or pumice like particulate at least partially embedded in and below the outer surface of the silicone polymer pad to be directly carried thereby, and the particulate protruding from at least one side of the pad and exposed for rubbing contact with said fingernail, the particulate embedded in the polymer being cure-bonded thereto as a result of final curing of the polymer.
Claim 2
Dependent Claim
98 words
A flexible cosmetic abrasive sheet suitable for wet etching a natural or artificial fingernail, by rubbing contact therewith, that comprises (a) a tough, flexible, thin, foldable and stretchable pad of silicone polymer, and (b) abrasive pumice or pumice like particulate at least partially embedded in and below the outer surface of the silicone polymer pad to be directly carried thereby, and the particulate protruding from at least one side of the pad and exposed for rubbing contact with said fingernail, the particulate embedded in the polymer being cure-bonded thereto as a result of final curing of the polymer.
Claim 3
Dependent Claim
13 words
The pad of claim 1 which has thickness less than about 3/32 inch.
Claim 4
Dependent Claim
19 words
The pad of claim 2 which is generally circular, and has a diameter between about 1 and 21/2 inches.
Claim 5
Dependent Claim
49 words
The sheet of claim 1 which is formed from a layer of incompletely cured silicone polymer with which the particulate is combined to adhere to the sheet, with edges of the particulate penetrating the silicone, the sheet then allowed to cure, and being stretchable with said particulate embedded therein.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-02-24 | 1989-08-26 | 1990-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-24 | 1993-08-26 | 1994-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-24 | 1997-08-26 | 1998-02-25 | $7700.00 | Window Closed / Lapsed |