US3799788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon black pigments
Assignee: Cabot Corp
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Filing: 1973-04-02
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Granted: 1974-03-26
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Expires: 1993-04-02
Abstract
Abstract A NEW AND NOVEL CLASS OF CARBON BLACK PIGMENTS HAVING WELL-DEFINED PROPERTIES WHICH ARE SUITABLE FOR USE IN SPECIAL BLACK APPLICATIONS AND ARE PARTICULARLY USEFUL IN THE PREPARATION OF REINFORCED RUBBER SYSTEMS.
Inventors
- 👤 M Jordan
- 👤 W Burbine
- 👤 F Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:42
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C01; C01P; C01P2006/00; C01P2006/12
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |