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US2598660A
Expired / Lapsed
US
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Triphenylmethane dyes
Assignee: GAF Chemicals Corp
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Filing: 1948-12-16
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Granted: 1952-06-03
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Expires: 1968-12-16
Abstract
No abstract record available.
Inventors
- 👤 Samuel A Glickman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:31
CPC Classifications
C; C09; C09B; C09B11/00; C09B11/04; C09B11/10; C09B11/12; C09B11/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A NEW COMPOSITION OF MATTER COMPRISING
Claim 2
Dependent Claim
6 words
A NEW COMPOSITION OF MATTER COMPRISING
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) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |