US3846148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel composite pigments
Assignee: HAMMOND LEAD PROD Inc
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Filing: 1972-08-31
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Granted: 1974-11-05
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Expires: 1992-08-31
Abstract
Abstract 1. A COMPOSITE PIGMENT COMPRISING FINELY DIVIDED PARTICLES OF A SILICATE MINERAL PIGMENT CARRYING ON THE SURFACE THEREOF AS A TRUE COATING AT LEAST ONE HYDROUS ADDITIVE MATERIAL IN A SUBSTANTIALLY AMORPHOUS STATE, SELECTED FROM THE GROUP CONSISTING OF A METAL PHOSPHATE, PHOSPHITE, BORATE, BOROPHOSPHATE, BOROPHOSPHITE AND CHROMATE.
Inventors
- 👤 J Nordyke
- 👤 W Spangenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:16
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/14; C09C1/02; C09C1/04; C09C1/046; C09C1/08; C09C1/20; C09C1/28; C09C1/34; C09C3/00; C09C3/006; C09C3/04; C09C3/041; C09C3/06; C01; C01P; C01P2002/00; C01P2002/02; C01P2004/00; C01P2004/60; C01P2004/61; C01P2004/80; C01P2006/00; C01P2006/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A COMPOSITE PIGMENT COMPRISING FINELY DIVIDED PARTICLES OF A SILICATE MINERAL PIGMENT CARRYING ON THE SURFACE THEREOF AS A TRUE COATING AT LEAST ONE HYDROUS ADDITIVE MATERIAL IN A SUBSTANTIALLY AMORPHOUS STATE, SELECTED FROM THE GROUP CONSISTING OF A METAL PHOSPHATE, PHOSPHITE, BORATE, BOROPHOSPHATE, BOROPHOSPHITE AND CHROMATE.
Claim 2
Dependent Claim
47 words
A COMPOSITE PIGMENT COMPRISING FINELY DIVIDED PARTICLES OF A SILICATE MINERAL PIGMENT CARRYING ON THE SURFACE THEREOF AS A TRUE COATING AT LEAST ONE HYDROUS ADDITIVE MATERIAL IN A SUBSTANTIALLY AMORPHOUS STATE, SELECTED FROM THE GROUP CONSISTING OF A METAL PHOSPHATE, PHOSPHITE, BORATE, BOROPHOSPHATE, BOROPHOSPHITE AND CHROMATE.
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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |