US2154639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of polymerization products
Assignee: Rohm and Haas Co
•
Filing: 1935-12-04
•
Granted: 1939-04-18
•
Expires: 1955-12-04
Abstract
No abstract record available.
Inventors
- 👤 Rohm Otto
- 👤 Bauer Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:34
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/0074; B29C; B29C33/00; B29C39/00; B29C39/003; B29C39/006; B29D11/00009; Y; Y10; Y10S; Y10S425/00; Y10S425/023; Y10S425/044
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) | 1942-04-17 | 1942-10-17 | 1943-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-04-17 | 1946-10-17 | 1947-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-04-17 | 1950-10-17 | 1951-04-18 | $7700.00 | Window Closed / Lapsed |