Patent US2955899A successfully refreshed from Google Patents.
US2955899A
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Triarylmethane dyestuffs and process of dyeing fibrous material
Assignee: Union Carbide Corp
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Filing: 1957-04-29
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Granted: 1960-10-11
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Expires: 1977-04-29
Abstract
No abstract record available.
Inventors
- 👤 Donald L Bailey
- 👤 Ronald M Pike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:45
CPC Classifications
C; C09; C09B; C09B11/00; C09B11/04; C09B11/10; C09B11/12; C08; C08G; C08G77/00; C09B69/00; C09B69/008; Y; Y10; Y10S; Y10S8/00; Y10S8/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
SILICON-CONTAINING TRIARYLMETHANE DYESTUFFS CONTAINING THE UNIT REPRESENTED BY THE GENERAL FORMULA:
Claim 2
Dependent Claim
11 words
SILICON-CONTAINING TRIARYLMETHANE DYESTUFFS CONTAINING THE UNIT REPRESENTED BY THE GENERAL FORMULA:
References Cited (Backward Citations)
US2359733A
Cited
US2715133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |