US2992877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing process
Assignee: Bayer AG
•
Filing: 1957-08-13
•
Granted: 1961-07-18
•
Expires: 1977-08-13
Abstract
No abstract record available.
Inventors
- 👤 Hees Walter
- 👤 Schneider Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:54
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/34; D06P3/52; D06P3/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS FOR THE DYEING OF ARTICLES FROM A MEMBER OF THE GROUP CONSISTING OF POLYESTERS AND CELLULOSE TRIACETATE WITH DISPERSE DYESTUFFS WHICH COMPRISES CARRYING OUT THE DYEING IN THE PRESENCE OF AN ESTER OF A LOW MOLECULAR WEIGHT ALIPHATIC ALCOHOL WITH A SALICYLIC ACID SUBSTITUTED IN THE BENZENE RING BY A LOW MOLECULAR WEIGHT ALKYL GROUP.
Claim 2
Dependent Claim
57 words
A PROCESS FOR THE DYEING OF ARTICLES FROM A MEMBER OF THE GROUP CONSISTING OF POLYESTERS AND CELLULOSE TRIACETATE WITH DISPERSE DYESTUFFS WHICH COMPRISES CARRYING OUT THE DYEING IN THE PRESENCE OF AN ESTER OF A LOW MOLECULAR WEIGHT ALIPHATIC ALCOHOL WITH A SALICYLIC ACID SUBSTITUTED IN THE BENZENE RING BY A LOW MOLECULAR WEIGHT ALKYL GROUP.
References Cited (Backward Citations)
FR579896A
Cited
US2881045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |