US3822141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated pearlescent product
Assignee: Whittaker Corp
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Filing: 1970-10-08
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Granted: 1974-07-02
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Expires: 1990-10-08
Abstract
Abstract AN IMPROVED BISMUTH OXYCHLORIDE COATED PERALESCENT PARTICLE COMPRISING A WATER-INSOLUBLE PARTICLATE SILICATE PRETREATED WITH AN AQUEOUS ACIDIC SOLUTION AND HAVING CO:-PRECIPITATED THEREON BISMUTH OXYCHLORIDE AND TITANIUM DIOXDE.
Inventors
- 👤 H Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:54
CPC Classifications
A; A61; A61Q; A61Q1/00; A61Q1/02; A61K; A61K8/00; A61K8/02; A61K8/11; A61K8/18; A61K8/19; A61K8/29; C; C01; C01G; C01G29/00; C09; C09C; C09C1/00; C09C1/0015; C09C1/0021; C09D; C09D5/00; C09D5/36; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412; A61K2800/42; A61K2800/43; A61K2800/436; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84; C09C2200/00; C09C2200/10; C09C2200/102; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993
Claims Analysis
Total Claims: 0
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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) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |