US2349756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formaldehyde resin modified with a polyiso-or polyisothiocyanate
Assignee: EIDP Inc
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Filing: 1940-07-25
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Granted: 1944-05-23
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Expires: 1960-07-25
Abstract
No abstract record available.
Inventors
- 👤 Pratt Burt Carlton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:06
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/28; C08G18/40; C08G18/54; C08G18/74; C08G18/76; C08G18/7614; C08G18/7628; C08G18/7635; C08G18/77; C08G18/771; C08G18/81; C08G18/8125
Claims Analysis
Total Claims: 0
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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) | 1947-05-23 | 1947-11-22 | 1948-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-05-23 | 1951-11-22 | 1952-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-05-23 | 1955-11-22 | 1956-05-23 | $7700.00 | Window Closed / Lapsed |