US3824111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel pigment dispersant
Assignee: PPG Industries Inc
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Filing: 1972-04-28
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Granted: 1974-07-16
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Expires: 1992-04-28
Abstract
Abstract IT HAS BEEN FOUND THAT BASIC NITROGEN-CONTAINING ADDUCTS OF GLYCIDYL ETHERS OR ESTERS CONTAINING AN AACYLIC HYDROCARBON CHAIN OF AT LAST EIGHT CARBON ATOMS, WITH SECONDARY AMINE OR A TERITARY AMINE SALT ARE USEFUL AS GRINDING MEDIA IN PREPARING STABLE PIGMENT DISPERSIONS USEFUL IN WATER-SOLUBLE COATING SYSTEMS, FOR EXAMPLE, ELECTRODEPOSITABLE COMPOSITIONS.
Inventors
- 👤 R Jerabek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:07
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4488; C09D5/4492; C09B; C09B67/00; C09B67/0071; C09B67/0084; C09B67/0085; C09B67/0088
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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |