US3300334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating process for glass fibers and product
Assignee: Whittaker Corp
•
Filing: 1963-01-21
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Granted: 1967-01-24
•
Expires: 1983-01-21
Abstract
No abstract record available.
Inventors
- 👤 Rex B Gosnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:00
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
79 words
A PROCESS FOR COATING GLASS FIBERS COMPRISING BRINGING A GLASS FIBER INTO CONTACT WITH A FUSIBLE SOLID POLYBENZIMIDAZOLE WHILE SAID GLASS FIBER IS IN THE SEMI-MOLTEN STATE, SAID POLYBENZIMIDAZOLE BEING SUFFICIENTLY FUSIBLE TO EFFECTIVELY COAT SAID FIBER, ALLOWING SAID SEMI-MOLTEN FIBER TO REMAIN IN SLIDING CONTACT WITH SAID POLYBENZIMIDAZOLE FOR SUFFICIENT TIME TO ALLOW SAID FIBER TO TRANSFER SUFFICIENT HEAT TO SAID POLYBENZIMIDAZOLE FOR SAID POLYBENZIMIDAZOLE TO FUSE AND COAT SAID FIBER, AND REMOVING SAID FIBER FROM SAID POLYBENZIMIDAZOLE.
Claim 2
Dependent Claim
79 words
A PROCESS FOR COATING GLASS FIBERS COMPRISING BRINGING A GLASS FIBER INTO CONTACT WITH A FUSIBLE SOLID POLYBENZIMIDAZOLE WHILE SAID GLASS FIBER IS IN THE SEMI-MOLTEN STATE, SAID POLYBENZIMIDAZOLE BEING SUFFICIENTLY FUSIBLE TO EFFECTIVELY COAT SAID FIBER, ALLOWING SAID SEMI-MOLTEN FIBER TO REMAIN IN SLIDING CONTACT WITH SAID POLYBENZIMIDAZOLE FOR SUFFICIENT TIME TO ALLOW SAID FIBER TO TRANSFER SUFFICIENT HEAT TO SAID POLYBENZIMIDAZOLE FOR SAID POLYBENZIMIDAZOLE TO FUSE AND COAT SAID FIBER, AND REMOVING SAID FIBER FROM SAID POLYBENZIMIDAZOLE.
Claim 3
Dependent Claim
35 words
AN ARTICLE COMPRISING A GLASS FIBER COATED WITH A POLYBENZIMIDAZOLE PREPARED BY CONDENSING AN AROMATIC TETRAMINE AND A DIPHENYL ESTER OF AN AROMATIC DICARBOXYLIC ACID, SAID GLASS FIBER AND SAID POLYBENZIMIDAZOLE BEING IN ABUTTING RELATION.
Claim 4
Dependent Claim
35 words
AN ARTICLE COMPRISING A GLASS FIBER COATED WITH A POLYBENZIMIDAZOLE PREPARED BY CONDENSING AN AROMATIC TETRAMINE AND A DIPHENYL ESTER OF AN AROMATIC DICARBOXYLIC ACID, SAID GLASS FIBER AND SAID POLYBENZIMIDAZOLE BEING IN ABUTTING RELATION.
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US2676898A
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US2699415A
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US2895948A
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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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |