US2073666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of hardening proteins
Assignee: EIDP Inc
•
Filing: 1935-07-17
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Granted: 1937-03-16
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Expires: 1955-07-17
Abstract
No abstract record available.
Inventors
- 👤 Christian J Werniund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:01
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/50; C; C08; C08H; C08H1/00; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/16; C08K5/20; C09; C09D; C09D189/00; C09D189/005; C09D189/04; C09D189/06; C09H; C09H11/00; C09H7/00; C08K2003/2227
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) | 1940-03-15 | 1940-09-14 | 1941-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-03-15 | 1944-09-14 | 1945-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-03-15 | 1948-09-14 | 1949-03-16 | $7700.00 | Window Closed / Lapsed |