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US3449295A
Expired / Lapsed
US
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High molecular weight linear copolyesters of bisphenols and mixtures of ortho-phthalic and iso- and/or terephthalic acids
Assignee: Gevaert Photo Producten NV
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Filing: 1966-09-30
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Granted: 1969-06-10
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Expires: 1986-09-30
Abstract
No abstract record available.
Inventors
- 👤 Andre Jan Conix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:22
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/19; C08G63/193; C08G63/195
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2854434A
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US3028364A
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US3138898A
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GB902021A
Cited
US3133898A
Cited
US3036992A
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US3160602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |