US2680137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diethylene triamine condensate
Assignee: Individual
•
Filing: 1951-08-30
•
Granted: 1954-06-01
•
Expires: 1971-08-30
Abstract
No abstract record available.
Inventors
- 👤 Charles F Pickett
- 👤 Rosenfeld Myer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:53
CPC Classifications
C; C07; C07C; C07C215/00; C07C215/02; C07C215/04; C07C215/06; C07C213/00; C07C213/02; C10; C10M; C10M2207/00; C10M2207/28; C10M2207/282
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
THE CONDENSATION PRODUCT FORMED BY ADMIXING DIETHYLENE TRIAMINE AND 4-HYDROXY-4METHYL-2-PENTANONE IN THE RATIO OF ONE MOLE OF THE DIETHYLENE TRIAMINE TO FROM ONE TO THREE MOLES OF DIACETONE ALCOHOL.
Claim 2
Dependent Claim
29 words
THE CONDENSATION PRODUCT FORMED BY ADMIXING DIETHYLENE TRIAMINE AND 4-HYDROXY-4METHYL-2-PENTANONE IN THE RATIO OF ONE MOLE OF THE DIETHYLENE TRIAMINE TO FROM ONE TO THREE MOLES OF DIACETONE ALCOHOL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |