Patent US3829612A successfully refreshed from Google Patents.
Patent US2529016A successfully refreshed from Google Patents.
US2529016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid fading inhibition using n-benzylated amino-triazoles and -tetrazoles
Assignee: GAF Chemicals Corp
•
Filing: 1947-06-10
•
Granted: 1950-11-07
•
Expires: 1967-06-10
Abstract
No abstract record available.
Inventors
- 👤 Harry W Grimmel
- 👤 Jack F Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:14
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/6426; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
THE PROCESS FOR INCREASING THE RESISTANCE TO ACID FADING OF COLORATIONS ON TEXTILE MATERIAL COMPRISING AN ORGANIC DERIVATIVE OF CELLULOSE, WHICH COMPRISES INCORPORATING IN SUCH MATERIAL A WATER INSOLUBLE, SOLID, COLORLESS N-BENZYLATED DERIVATIVE OF A COMPOUND OF THE CLASS CONSISTING OF 3-AMINO-1,2,4-TRIAZOLE AND 5-AMINO-TETRAZOLE.
Claim 2
Dependent Claim
44 words
THE PROCESS FOR INCREASING THE RESISTANCE TO ACID FADING OF COLORATIONS ON TEXTILE MATERIAL COMPRISING AN ORGANIC DERIVATIVE OF CELLULOSE, WHICH COMPRISES INCORPORATING IN SUCH MATERIAL A WATER INSOLUBLE, SOLID, COLORLESS N-BENZYLATED DERIVATIVE OF A COMPOUND OF THE CLASS CONSISTING OF 3-AMINO-1,2,4-TRIAZOLE AND 5-AMINO-TETRAZOLE.
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) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |