US3459829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester imide resins from imide group containing polyvalent carboxylic acids containing at least three carboxy groups
Assignee: Beck & Co Dr GmbH
•
Filing: 1967-08-02
•
Granted: 1969-08-05
•
Expires: 1987-08-02
Abstract
No abstract record available.
Inventors
- 👤 Karl Schmidt
- 👤 Ferdinand Hansch
- 👤 Hans-Malte Rombrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:22
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/16; C08G12/00; C08G12/02; C08G12/04; C08G12/06; C08G12/08; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |