Patent US3801348A successfully refreshed from Google Patents.
US3801348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying a coating of heat hardenable thickened epoxy resin masses
Assignee: Bayer Pharma AG
•
Filing: 1972-09-21
•
Granted: 1974-04-02
•
Expires: 1992-09-21
Abstract
Abstract A method of applying a coating of comminuted particles of a heat hardenable epoxy resin to a surface and then heating said particles at a temperature of 150* to 180* C to produce a hardened resinous coating. The heat-hardenable epoxy resin masses ranging from a soft to a brittle consistency are prepared by thickening, at a temperature from 20* to 120* C., a mixture of (1) a liquid epoxy resin, (2) dicyandiamide, and (3) a tertiary amine accelerator, in the presence of a monoamine or diamine.
Inventors
- 👤 Dietrich Helm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:03
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/4007; C08G59/4014; C08G59/4021; C08G59/56; Y; Y10; Y10S; Y10S524/00; Y10S524/904
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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |