Patent US3228997A successfully refreshed from Google Patents.
US3228997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pearlescent polyester compositions
Assignee: Eastman Kodak Co
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Filing: 1961-02-08
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Granted: 1966-01-11
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Expires: 1981-02-08
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
2026-11-01 07:27
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A PROCESS OF PRODUCING A BIPHASE POLYESTER PLASTIC PRODUCT HAVING A PEARLESCENT APPREARANCE WHICH COMPRISES FORMING A COMMINUTED MIXTURE CONTAINING 95-60% BY WEIGHT OF A POLYESTER CONSISTING OF THE CONDENSATION PRODUCT OF 4,4''-SULFONYL DIBENZOIC ACID WITH A DIOXY COMPOUND SELECTED FROM THE CLASS CONSISTING OF 1,4-BUTANE DIOL AND 1,5-PENTANE DIOL AND 5-40% BY WEIGHT OF A COPOLYESTER CONSISTING OF THE CONDENSATION PRODUCT OF 4,4''SULFONYL DIBENZOIC ACID, AND ALIPHATIC DICARBOXYLIC ACID OF 4-10 CARBON ATOMS AND A DIOL SELECTED FROM THE CLASS CONSISTING OF 1,4-BUTANE DIOL AND 1,5-PENTANE DIOL, HEATING THE MIXTURE TO THE MELTING POINT OF THE HGIHEST MELTING CONDENSATION PRODUCT MATERIAL AND CAUSING THE MOLTEN MATERIAL TO FLOW.
Claim 2
Dependent Claim
109 words
A PROCESS OF PRODUCING A BIPHASE POLYESTER PLASTIC PRODUCT HAVING A PEARLESCENT APPREARANCE WHICH COMPRISES FORMING A COMMINUTED MIXTURE CONTAINING 95-60% BY WEIGHT OF A POLYESTER CONSISTING OF THE CONDENSATION PRODUCT OF 4,4''-SULFONYL DIBENZOIC ACID WITH A DIOXY COMPOUND SELECTED FROM THE CLASS CONSISTING OF 1,4-BUTANE DIOL AND 1,5-PENTANE DIOL AND 5-40% BY WEIGHT OF A COPOLYESTER CONSISTING OF THE CONDENSATION PRODUCT OF 4,4''SULFONYL DIBENZOIC ACID, AND ALIPHATIC DICARBOXYLIC ACID OF 4-10 CARBON ATOMS AND A DIOL SELECTED FROM THE CLASS CONSISTING OF 1,4-BUTANE DIOL AND 1,5-PENTANE DIOL, HEATING THE MIXTURE TO THE MELTING POINT OF THE HGIHEST MELTING CONDENSATION PRODUCT MATERIAL AND CAUSING THE MOLTEN MATERIAL TO FLOW.
References Cited (Backward Citations)
US2364024A
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US2377231A
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US2353457A
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US2744089A
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US2744091A
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US2996474A
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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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |