US2780604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mono (chloromethyl) styrene, its derivatives, and ion-exchange resins from polymers of aminated compound
Assignee: Veolia WTS Systems USA Inc
•
Filing: 1953-01-22
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Granted: 1957-02-05
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Expires: 1973-01-22
Abstract
No abstract record available.
Inventors
- 👤 John T Clarke
- 👤 Allan H Hamerschlag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:46
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/04; C07C209/06; C07C209/08; C08; C08F; C08F26/00; Y; Y10; Y10S; Y10S526/00; Y10S526/923
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
ASYNTHETIC ORGANIC VINYL AROMATIC COMPOUND HAVING THE STRUCTURE
Claim 2
Dependent Claim
8 words
ASYNTHETIC ORGANIC VINYL AROMATIC COMPOUND HAVING THE STRUCTURE
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) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |