US3088933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers obtained by polycondensation of polyhydric alcohols with the alkyl esters of2, 5-dihydroxy-hexahydro-terephthalic acids
Assignee: Olin Corp
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Filing: 1959-01-13
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Granted: 1963-05-07
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Expires: 1979-01-13
Abstract
No abstract record available.
Inventors
- 👤 Gerhard F Ottmann
- 👤 Christoph J Grundmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:32
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/78; C08G63/82; C08G63/02; C08G63/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
POLYMERIZATION PRODUCTS COMPRISING THE POLYMERIC POLYCONDENSATION PRODUCTS OF NOT LESS THAN 1 MOLE OF A POLYHYDRIC ALIPHATIC ALCOHOL CONTAINING FROM 2 TO 6 HYDROXY GROUPS WITH 1 MOLE OF A LOWER ALKYL ESTER OF 2,5DIHYDROXY-HEXAHYDRO-TEREPHTHALIC ACID WHEREIN THE ALKYL GROUP CONTAINS FROM 1 TO 8 CARBON ATOMS.
Claim 2
Dependent Claim
47 words
POLYMERIZATION PRODUCTS COMPRISING THE POLYMERIC POLYCONDENSATION PRODUCTS OF NOT LESS THAN 1 MOLE OF A POLYHYDRIC ALIPHATIC ALCOHOL CONTAINING FROM 2 TO 6 HYDROXY GROUPS WITH 1 MOLE OF A LOWER ALKYL ESTER OF 2,5DIHYDROXY-HEXAHYDRO-TEREPHTHALIC ACID WHEREIN THE ALKYL GROUP CONTAINS FROM 1 TO 8 CARBON ATOMS.
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) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |