US3262233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of polishing plastic lenses
Assignee: Bausch and Lomb Inc
•
Filing: 1963-01-02
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Granted: 1966-07-26
•
Expires: 1983-01-02
Abstract
No abstract record available.
Inventors
- 👤 Schrier Israel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:47
CPC Classifications
B; B24; B24B; B24B13/00; C; C09; C09K; C09K3/00; C09K3/14; C09K3/1454; C09K3/1463
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
THE METHOD OF POLISHING PLASTIC LENSES COMPRISING STEPS, MOUNTING A PLASTIC LENS ON A RIGID LENS BLOCK, POLISHING A MAJOR SURFACE OF THE PLASTIC LENS WITH AN AQUEOUS SOLUTION OF WATER MISCIBLE LUBRICANT INCLUDING A WETTING AGENT AND TIN OXIDE OF A SIZE LESS THAN 5 MICRONS.
Claim 2
Independent Claim
47 words
THE METHOD OF POLISHING PLASTIC LENSES COMPRISING STEPS, MOUNTING A PLASTIC LENS ON A RIGID LENS BLOCK, POLISHING A MAJOR SURFACE OF THE PLASTIC LENS WITH AN AQUEOUS SOLUTION OF WATER MISCIBLE LUBRICANT INCLUDING A WETTING AGENT AND TIN OXIDE OF A SIZE LESS THAN 5 MICRONS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |