Patent US3709846A successfully refreshed from Google Patents.
US3709846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trimellitic anhydride modified polycarboxylic acid electrocoating resins
Assignee: EIDP Inc
•
Filing: 1970-09-25
•
Granted: 1973-01-09
•
Expires: 1990-09-25
Abstract
Abstract A PAINT BATH COMPOSITIONS FOR ELECTRODEPOSITION OF PAINT UPON AN ANODE, SAID BATH COMPRISING AN AQUEOUS DISPERSION OF PARTICULATE PIGMENT, A WATER-SOLUBLE BASE AND A POLYCARBOXYLIC ACID FORMED BY REACTING A HYDROXYL BEARING OF HYDROXYL YIELDING LINEAR BASE COMPOUND WITH AN OLEFINICALLY UNSATURETED ACRYLIC, CARBOXYLIC ACID OF ABOUT 18 CARBON ATOMS AND SUBSEQUENTLY REACTING THE RESULTANT RESIN WITH TRIMELLITIC ANYYDRIDE.
Inventors
- 👤 I Tsou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:34
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/83; C08G18/831; C08F; C08F8/00; C08F8/14; C08G18/08; C08G18/0804; C08G18/0819; C08G18/0823; C08G18/28; C08G18/30; C08G18/32; C08G18/3203; C08G63/00; C08G63/02; C08G63/12; C08G63/46; C08G63/48; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/4423
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |