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US3453242A
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Elastomers from polyethers and ethylene imine derivatives
Assignee: SIH Stiftung and Co Industrie Holding KG
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Filing: 1964-05-20
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Granted: 1969-07-01
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Expires: 1984-05-20
Abstract
No abstract record available.
Inventors
- 👤 Werner Schmitt
- 👤 Robert Purrmann
- 👤 Peter Jochum
- 👤 Wolf Dieter Zahler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:24
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; C08G73/024; A; A61; A61K; A61K6/00; A61K6/90; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G63/00; C08G63/68; C08G63/685; C08G63/91; C08G63/914; C08G65/00; C08G65/02; C08G65/32; C08G65/329
Claims Analysis
Total Claims: 0
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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) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |