US3499783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane coatings derived from aromatic and aliphatic polyisocyanates
Assignee: Ashland LLC
•
Filing: 1967-05-17
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Granted: 1970-03-10
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Expires: 1987-05-17
Abstract
No abstract record available.
Inventors
- 👤 Floyd M Nelson
- 👤 Grant O Sedgwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:28
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/12; D06N3/14; C; C09; C09D; C09D175/00; C09D175/04; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24521; Y10T428/26; Y10T428/31504; Y10T428/31551; Y10T428/31554; Y10T428/31591; Y10T428/31598; Y10T428/31605
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3113880A
Cited
US3391110A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |