Patent US3228780A successfully refreshed from Google Patents.
US3228780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High molecular organic products colored with a pigment dyestuff
Assignee: BASF Schweiz AG
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Filing: 1963-09-23
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Granted: 1966-01-11
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Expires: 1983-09-23
Abstract
No abstract record available.
Inventors
- 👤 Grelat Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:51
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/22; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31964
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A SOLID POLYMERIC MATERIAL IN WHICH THERE IS INCORPORATED 4,4''-DIAMINO-1,1''-DIANTHRAQUINONYL IN FINELY DIVIDED FORM.
Claim 2
Dependent Claim
14 words
A SOLID POLYMERIC MATERIAL IN WHICH THERE IS INCORPORATED 4,4''-DIAMINO-1,1''-DIANTHRAQUINONYL IN FINELY DIVIDED FORM.
References Cited (Backward Citations)
US1834876A
Cited
US1878966A
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US2346957A
Cited
US2929731A
Cited
US2927035A
Cited
US3003989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |