US2832799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amides of polyunsaturated long chain dibasic acids and resinous products prepared therefrom
Assignee: Shell Development Co
•
Filing: 1955-02-03
•
Granted: 1958-04-29
•
Expires: 1975-02-03
Abstract
No abstract record available.
Inventors
- 👤 George B Payne
- 👤 Curtis W Smith
- 👤 Albert C Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:34
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/54; C07; C07C; C07C51/00; C08G59/4007; C08G59/4014; C08G59/4057; C08G59/44; C08L; C08L63/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
11 words
AN AMIDE SELECTED FROM THE CLASS OF AMINDES HAVING THE FORMULA
Claim 2
Dependent Claim
11 words
AN AMIDE SELECTED FROM THE CLASS OF AMINDES HAVING THE FORMULA
Claim 3
Dependent Claim
2 words
N,N''-DICARBALLYLOXY 8,12-EICOSADIENE-1,20-DIAMIDE.
Claim 4
Dependent Claim
2 words
N,N''-DICARBALLYLOXY 8,12-EICOSADIENE-1,20-DIAMIDE.
References Cited (Backward Citations)
US2371104A
Cited
GB605848A
Cited
US2609381A
Cited
US2609380A
Cited
US2659713A
Cited
US2757192A
Cited
US2675369A
Cited
US2680713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |