US2701191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polishing pads
Assignee: American Optical Corp
•
Filing: 1949-02-02
•
Granted: 1955-02-01
•
Expires: 1969-02-02
Abstract
No abstract record available.
Inventors
- 👤 Albert J Laliberte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:52
CPC Classifications
B; B24; B24D; B24D9/00; B24B; B24B13/00; B24B13/01; Y; Y10; Y10S; Y10S451/00; Y10S451/921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A LONG-LIFE HIGH SPEED POLISHING PAD FOR USE IN POLISHING GLASS ARTICLES SUCH AS LENSES COMPRISING AN INHERENTLY SUBSTANTIALLY ABRASIVE-FREE, RESILIENT SUBSTANTIALLY NON-ELASTIC SOLID MEMBER CONSISTING ESSENTIALLY OF VULCANIZED AND PLASTICIZED BASE MATERIAL FROM THE GROUP CONSISTING OF ELASTIC DIOLEFIN POLYMER, POLYSULPHIDE SYNTHETIC RUBBER POLYMER AND MIXTURES THEREOF, AND WHICH MATERIAL CONTAINS A COMPATIBLE THERMOPLASTIC VINYL RESIN THAT IS SUBSTANTIALLY UNIFORMLY DISPERSED THERETHROUGH, THE PROPORTION OF RESIN BEING IN THE RANGE OF FROM ABOUT 10 TO 70% BY WEIGHT OF THE VULCANIZED AND PLASTICIZED BASE MATERIAL AND RESIN, AND SAID MEMBER FURTHER CONTAINING PARTICLES OF MATERIAL FROM THE GROUP CONSISTING OF CORN COB, WOOD FLOURS, CERIUM OXIDE AND MIXTURES THEREOF SUBSTANTIALLY UNIFORMLY DISTRIBUTED THERETHROUGH IN AN AMOUNT UP TO BUT NOT SUBSTANTIALLY EXCEEDING ABOUT 70% BY WEIGHT OF THE WHOLE.
Claim 2
Dependent Claim
130 words
A LONG-LIFE HIGH SPEED POLISHING PAD FOR USE IN POLISHING GLASS ARTICLES SUCH AS LENSES COMPRISING AN INHERENTLY SUBSTANTIALLY ABRASIVE-FREE, RESILIENT SUBSTANTIALLY NON-ELASTIC SOLID MEMBER CONSISTING ESSENTIALLY OF VULCANIZED AND PLASTICIZED BASE MATERIAL FROM THE GROUP CONSISTING OF ELASTIC DIOLEFIN POLYMER, POLYSULPHIDE SYNTHETIC RUBBER POLYMER AND MIXTURES THEREOF, AND WHICH MATERIAL CONTAINS A COMPATIBLE THERMOPLASTIC VINYL RESIN THAT IS SUBSTANTIALLY UNIFORMLY DISPERSED THERETHROUGH, THE PROPORTION OF RESIN BEING IN THE RANGE OF FROM ABOUT 10 TO 70% BY WEIGHT OF THE VULCANIZED AND PLASTICIZED BASE MATERIAL AND RESIN, AND SAID MEMBER FURTHER CONTAINING PARTICLES OF MATERIAL FROM THE GROUP CONSISTING OF CORN COB, WOOD FLOURS, CERIUM OXIDE AND MIXTURES THEREOF SUBSTANTIALLY UNIFORMLY DISTRIBUTED THERETHROUGH IN AN AMOUNT UP TO BUT NOT SUBSTANTIALLY EXCEEDING ABOUT 70% BY WEIGHT OF THE WHOLE.
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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) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |