Patent US3155686A successfully refreshed from Google Patents.
US3155686A
Expired / Lapsed
US
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Poly (ester lactones) and method for preparing the same
Assignee: Monsanto Co
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Filing: 1960-01-04
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Granted: 1964-11-03
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Expires: 1980-01-04
Abstract
No abstract record available.
Inventors
- 👤 Erhard J Prill
- 👤 James C Wygant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:40
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/26; C07D307/30; C07D307/32; C07D307/33; C07D309/00; C07D309/16; C07D309/28; C07D309/30; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
12 words
A POLY(ESTER LACTONE) INCLUDING ONLY GAMMA- AND DELTA-LACTONES HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
12 words
A POLY(ESTER LACTONE) INCLUDING ONLY GAMMA- AND DELTA-LACTONES HAVING THE STRUCTURAL FORMULA
Claim 3
Dependent Claim
29 words
THE POLY(ESTER LACTONE) OF CLAIM 1, WHEREIN N IS 2; X AND Q ARE 1; R2, R3, R4, AND R5 ARE H; R1 IS -C9H19; AND R6 IS -(CH2)2-.
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) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |