Patent US3305604A successfully refreshed from Google Patents.
US3305604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pearlescent polyester compositions
Assignee: Eastman Kodak Co
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Filing: 1965-01-22
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Granted: 1967-02-21
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Expires: 1985-01-22
Abstract
No abstract record available.
Inventors
- 👤 Gerald M Armstrong
- 👤 Gordon C Newland
- 👤 John W Tamblyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:54
CPC Classifications
C; C08; C08L; C08L69/00; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
75 words
A PROCESS OF PRODUCING A BIPHASE POLYESTER POLYMERIC PRODUCT HAVING A PEARLESCENT APPEARANCE WHICH COMPRISES FORMING A COMMINUTED MIXTURE CONTAINING FROM ABOUT 70 TO ABOUT 60% BY WEIGHT OF A COPOLYSTER OF TEREPHTHALIC ACID AND ISOPHTHALIC ACID WITH 1,4-CYCLOHEXANEDIMETHANOL AND FROM ABOUT 30 TO ABOUT 40% BY WEIGHT OF A POLYESTER OF CARBONIC ACID WITH 1,4-CYCLOHEXANEDIMETHANOL, HEATING THE MIXTURE TO THE MELTING POINT OF THE HIGHEST MELTING COMPONENT AND CAUSING THE MOLTEN MATERIAL TO FLOW.
Claim 2
Dependent Claim
75 words
A PROCESS OF PRODUCING A BIPHASE POLYESTER POLYMERIC PRODUCT HAVING A PEARLESCENT APPEARANCE WHICH COMPRISES FORMING A COMMINUTED MIXTURE CONTAINING FROM ABOUT 70 TO ABOUT 60% BY WEIGHT OF A COPOLYSTER OF TEREPHTHALIC ACID AND ISOPHTHALIC ACID WITH 1,4-CYCLOHEXANEDIMETHANOL AND FROM ABOUT 30 TO ABOUT 40% BY WEIGHT OF A POLYESTER OF CARBONIC ACID WITH 1,4-CYCLOHEXANEDIMETHANOL, HEATING THE MIXTURE TO THE MELTING POINT OF THE HIGHEST MELTING COMPONENT AND CAUSING THE MOLTEN MATERIAL TO FLOW.
Claim 3
Dependent Claim
96 words
A PROCESS OF PRODUCING A BIPHASE POLYESTER POLYMERIC PRODUCT HAVING A PEARLESCENT APPEARANCE WHICH COMPRISES FORMING A COMMINUTED MIXTURE CONTAINING FROM ABOUT 70 TO ABOUT 60% BY WEIGHT OF A COPOLYESTER OF TEREPHTAALIC ACID AND ISOPHTHALIC ACID WITH 1,4-CYCLOHEXANEDIMETHANOL AND FROM ABOUT 30 TO 40% BY WEIGHT OF A COPOLYESTER OF SEBACIC ACID AND A PHTHALIC ACID WITH 1,4-CYCLOHEXANEDIMETHANOL, THE TOTAL AMOUNT OF THE CONDENSED SEBACIC ACID IN THE POLYESTER MIXTURE BEING LESS THAN 18 MOLE PERCENT, HEATING THE MIXTURE TO THE MELTING POINT OF THE HIGHEST MELTING COMPONENT AND CAUSING THE MOLTEN MATERIAL TO FLOW.
Claim 4
Dependent Claim
96 words
A PROCESS OF PRODUCING A BIPHASE POLYESTER POLYMERIC PRODUCT HAVING A PEARLESCENT APPEARANCE WHICH COMPRISES FORMING A COMMINUTED MIXTURE CONTAINING FROM ABOUT 70 TO ABOUT 60% BY WEIGHT OF A COPOLYESTER OF TEREPHTAALIC ACID AND ISOPHTHALIC ACID WITH 1,4-CYCLOHEXANEDIMETHANOL AND FROM ABOUT 30 TO 40% BY WEIGHT OF A COPOLYESTER OF SEBACIC ACID AND A PHTHALIC ACID WITH 1,4-CYCLOHEXANEDIMETHANOL, THE TOTAL AMOUNT OF THE CONDENSED SEBACIC ACID IN THE POLYESTER MIXTURE BEING LESS THAN 18 MOLE PERCENT, HEATING THE MIXTURE TO THE MELTING POINT OF THE HIGHEST MELTING COMPONENT AND CAUSING THE MOLTEN MATERIAL TO FLOW.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |