Patent US3278515A successfully refreshed from Google Patents.
US3278515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organo azo, anthraquinone and phthalocyanine dyestuffs
Assignee: GAF Chemicals Corp
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Filing: 1962-12-31
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Granted: 1966-10-11
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Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Schmidt-Nickels Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:47
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/44; C09B62/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
AN ORGANIC DYESTUFF SELECTED FROM THE GROUP CONSISTING OF AZO, ANTHRAQUINONE AND PHTHALOCYANINE DYESTUFFS CONTAINING IN THE MOLECULE AT LEAST ONE RADICAL WHICH IS BONDED TO A NUCLEAR CARBON ATOMS AND WHICH HAS THE FORMULA
Claim 2
Dependent Claim
35 words
AN ORGANIC DYESTUFF SELECTED FROM THE GROUP CONSISTING OF AZO, ANTHRAQUINONE AND PHTHALOCYANINE DYESTUFFS CONTAINING IN THE MOLECULE AT LEAST ONE RADICAL WHICH IS BONDED TO A NUCLEAR CARBON ATOMS AND WHICH HAS THE FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |