US2794794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear superpolyesters from tertiarybutyl isophthalic acid
Assignee: California Research LLC
•
Filing: 1953-10-29
•
Granted: 1957-06-04
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Expires: 1973-10-29
Abstract
No abstract record available.
Inventors
- 👤 Maurice J Schlatter
- 👤 Judson C Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:38
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/181
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
A LINEAR SUPERPOLYESTER OF 5-BUTYL-ISOPHTHALIC ACID AND A GLYCOL OF 2 TO 10 CARBON ATOMS.
Claim 2
Dependent Claim
15 words
A LINEAR SUPERPOLYESTER OF 5-BUTYL-ISOPHTHALIC ACID AND A GLYCOL OF 2 TO 10 CARBON ATOMS.
References Cited (Backward Citations)
US2623034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |