US2579375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonelectrostatic plastic compositions
Assignee: Monsanto Chemicals Ltd
•
Filing: 1950-01-04
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Granted: 1951-12-18
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Expires: 1970-01-04
Abstract
No abstract record available.
Inventors
- 👤 John B Eisen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:05
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/19; Y; Y10; Y10S; Y10S206/00; Y10S206/819; Y10S260/00; Y10S260/15; Y10S260/19; Y10S260/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
57 words
AN ARTICLE OF MANUFACTURE COMPRISING A MOLDED POLYSTYRENE BODY, AND DISTRIBUTED THERETHROUGH FROM 0.005% TO 5.0% OF ITS WEIGHT OF A LIPOPHILIC QUATERNARY AMMONIUM SOLT HAVING ONLY HYDROCARBON RADICALS ATTACHED TO THE NITROGEN ATOM, AT LEAST ONE OF WHICH HAS AT LEAST SIX CARBON ATOMS AND AT LEAST ONE OF WHICH HAS AT MOST FOUR CARBON ATOMS.
References Cited (Backward Citations)
US2234203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |