US3438846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminates of styrene-acrylonitrile and polyurethane
Assignee: Monsanto Co
•
Filing: 1967-11-20
•
Granted: 1969-04-15
•
Expires: 1987-11-20
Abstract
No abstract record available.
Inventors
- 👤 Saul M Cohen
- 👤 Marshall J Derby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:32
CPC Classifications
F; F41; F41H; F41H5/00; F41H5/02; F41H5/04; F41H5/0407; B; B32; B32B; B32B27/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3118854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |