US2863800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1, 3-dichloro-5, 5-dimethyl hydantion compositions
Assignee: Individual
•
Filing: 1952-09-16
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Granted: 1958-12-09
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Expires: 1972-09-16
Abstract
No abstract record available.
Inventors
- 👤 Paul M Gottfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:54
CPC Classifications
C; C07; C07D; C07D491/00; C07D491/02; C07D491/10; A; A01; A01N; A01N25/00; A01N25/12; A01N25/14; A01N43/00; A01N43/48; A01N43/50; A01N59/00; C02; C02F; C02F1/00; C02F1/72; C02F1/76; C02F1/766; C07D233/00; C07D233/54; C07D233/66; C07D233/72; A01N2300/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
77 words
A PROCESS FOR INCREASING THE SOLUTION RATE OF 1,3-DICHLORO-5,5-DIMETHYLHYDANTOIN WHICH COMPRISES, ADMIXING THE CHLORINATED HYDANTOIN WITH A WETTING AGENT, A SOLUBLE INORGANIC SALT WHICH DOES NOT REACT WITH MATER TO FORM CRYSTALLINE HYDRATES AND A SOLUBLE INORGANIC ANHYDROUS SALT, SAID WETTING AGENT, INORGANIC SALT AND ANHYDROUS SALT BEING NORMALLY SOLID AND BEING CHEMICALLY INERT WITH RESPECT TO SAID CHLORINATED HYDANTOIN, AND FRICTIONALLY COMMINUTING THE MIXTURE TO A MAXIMUM AVERAGE PARTICLE SIZE NOT GREATER THAN ABOUT 10 MICRONS.
References Cited (Backward Citations)
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Cited
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US1968628A
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |