US3141273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polishing synthetic resin lenses
Assignee: Honeywell Safety Products USA Inc
•
Filing: 1962-12-07
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Granted: 1964-07-21
•
Expires: 1982-12-07
Abstract
No abstract record available.
Inventors
- 👤 George M J Sarofeen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:24
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1454; C09K3/1463
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A METHOD OF POLISHING AN OPTICAL SURFACE MADE OF A SYNTHETIC RESIN COMPRISING SUPPORTING A HOMOGENEOUS MASS INCLUDING A STANNIC OXIDE AS THE CUTTING MATERIAL AND AN AQUEOUS SUSPENSION OF A WAX ON A SOLID YIELDABLE SURFACING MEDIUM AND CONTACTING SAID OPTICAL SURFACE WITH SAID SOLID YIELDABLE SURFACING MEDIUM SUPPORTING SAID HOMOGENEOUS MASS, SAID SUSPENSION HAVING A VISCOSITY SUBSTANTIALLY GREATER THAN THAT OF WATER.
Claim 2
Independent Claim
64 words
A METHOD OF POLISHING AN OPTICAL SURFACE MADE OF A SYNTHETIC RESIN COMPRISING SUPPORTING A HOMOGENEOUS MASS INCLUDING A STANNIC OXIDE AS THE CUTTING MATERIAL AND AN AQUEOUS SUSPENSION OF A WAX ON A SOLID YIELDABLE SURFACING MEDIUM AND CONTACTING SAID OPTICAL SURFACE WITH SAID SOLID YIELDABLE SURFACING MEDIUM SUPPORTING SAID HOMOGENEOUS MASS, SAID SUSPENSION HAVING A VISCOSITY SUBSTANTIALLY GREATER THAN THAT OF WATER.
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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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |