US2580504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenated trifluoromethylstyrene materials and method of making same
Assignee: Purdue Research Foundation
•
Filing: 1947-12-26
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Granted: 1952-01-01
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Expires: 1967-12-26
Abstract
No abstract record available.
Inventors
- 👤 Gustave B Bachman
- 👤 Leonda L Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:01
CPC Classifications
C; C08; C08F; C08F12/00; C08F12/02; C08F12/04; C08F12/14; C08F12/16; C08F12/20; C07; C07C; C07C17/00; C07C17/093; C07C17/35; C07C25/00; C07C25/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
9 words
A NUCLEARLY HALOGENATE TRIFLUOROMETHYL-ARYL-OLEFINICC COMPOUND HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2469845A
Cited
US2522491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |