US2717263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensation products of alpha-amino acids and phenols
Assignee: Individual
•
Filing: 1952-10-03
•
Granted: 1955-09-06
•
Expires: 1972-10-03
Abstract
No abstract record available.
Inventors
- 👤 Leonard L Mckinney
- 👤 Eugene A Setzkorn
- 👤 Eugene H Uhing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:41
CPC Classifications
C; C08; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C08G8/00; C08G8/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
US1933799A
Cited
GB470335A
Cited
US2153804A
Cited
US2229187A
Cited
US2247772A
Cited
US2373547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-05 | 1959-03-07 | 1959-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-05 | 1963-03-07 | 1963-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-05 | 1967-03-07 | 1967-09-06 | $7700.00 | Window Closed / Lapsed |