US3262802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized nacreous pigment
Assignee: Mearl Corp
•
Filing: 1963-03-12
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Granted: 1966-07-26
•
Expires: 1983-03-12
Abstract
No abstract record available.
Inventors
- 👤 William G Young
- 👤 Charles A Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:34
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/08; C01; C01P; C01P2002/00; C01P2002/60; C01P2004/00; C01P2004/80; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A NACREOUS PIGMENT, HAVING A NACRE-PRODUCING SUBSTANCE THEREIN, PLATE-LIKE CRYSTALS OF BASIC LEAD CARBONATE OF LESS THAN 1 MICRON IN THICKNESS AND FROM 5 TO 50 MICRONS IN DIAMETER, SAID CRYSTALS BEING STABILIZED AGAINST ACID ATTACK BY HAVING COATED THEREON A FILM OF AN ORGANIC COMPOUND OF A DIVELENT METAL, SAID COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF M(OR)2, AND
Claim 2
Dependent Claim
61 words
A NACREOUS PIGMENT, HAVING A NACRE-PRODUCING SUBSTANCE THEREIN, PLATE-LIKE CRYSTALS OF BASIC LEAD CARBONATE OF LESS THAN 1 MICRON IN THICKNESS AND FROM 5 TO 50 MICRONS IN DIAMETER, SAID CRYSTALS BEING STABILIZED AGAINST ACID ATTACK BY HAVING COATED THEREON A FILM OF AN ORGANIC COMPOUND OF A DIVELENT METAL, SAID COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF M(OR)2, AND
References Cited (Backward Citations)
US3025179A
Cited
US3008844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |