US3041352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted polyamines
Assignee: Shell USA Inc
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Filing: 1958-12-22
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Granted: 1962-06-26
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Expires: 1978-12-22
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Newey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:05
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5046; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/4986; A61Q; A61Q19/00; C07; C07D; C07D333/00; C07D333/02; C07D333/46; C07D333/48
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
4 words
N-(3-SULFOLANY)-POLYAMINE OF THE FORMULA
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) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |