Patent US2569064A successfully refreshed from Google Patents.
US2569064A
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Gamma lactones
Assignee: Uniroyal Inc
•
Filing: 1949-04-19
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Granted: 1951-09-25
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Expires: 1969-04-19
Abstract
No abstract record available.
Inventors
- 👤 Elbert C Ladd
- 👤 Merlin P Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:04
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/26; C07D307/30; C07D307/32; C07D307/33
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
AS A NEW CHEMICAL, A LACTONE HAVING THE FORMULA
Claim 2
Dependent Claim
9 words
AS A NEW CHEMICAL, A LACTONE HAVING THE FORMULA
References Cited (Backward Citations)
US2390526A
Cited
US2485100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |