US2739922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixtures of polymeric n-vinyl pyrrolidone and halogens
Assignee: Individual
•
Filing: 1952-03-13
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Granted: 1956-03-27
•
Expires: 1972-03-13
Abstract
No abstract record available.
Inventors
- 👤 Herman A Shelanski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:08
CPC Classifications
A; A61; A61K; A61K33/00; A61K33/18; A61K47/00; A61K47/50; A61K47/51; A61K47/56; A61K47/58; C; C08; C08F; C08F8/00; C08F8/18; C08F8/20; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26; Y; Y10; Y10S; Y10S264/00; Y10S264/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A METHOD OF REDUCING THE VAPOR PRESSURE OF FREE HALOGENS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND IODINE IN COMPOSITIONS CONTAINING THE SAME WHICH COMPRISES MIXING WITH SUCH FREE HALOGEN CONTAINING PRODUTS POLYMERIC N-VINYL PYRROLIDONE.
Claim 2
Independent Claim
36 words
A METHOD OF REDUCING THE VAPOR PRESSURE OF FREE HALOGENS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND IODINE IN COMPOSITIONS CONTAINING THE SAME WHICH COMPRISES MIXING WITH SUCH FREE HALOGEN CONTAINING PRODUTS POLYMERIC N-VINYL PYRROLIDONE.
References Cited (Backward Citations)
US2077298A
Cited
US2599140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |