US2989435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of chemical sterilization of aqueous liquids containing bacteria or spores ofbacteria
Assignee: US Philips Corp
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Filing: 1957-11-27
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Granted: 1961-06-20
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Expires: 1977-11-27
Abstract
No abstract record available.
Inventors
- 👤 Walop Jacobus Nicolaas
- 👤 Jacobs Jan
- 👤 Bock Cornelis Albertus De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:45
CPC Classifications
C; C11; C11D; C11D1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A METHOD OF STERILIZING AQUEOUS LIQUIDS CONTAINING SPORES OF BACTERIA COMPRISING, TREATING SAID LIQUIDS WITH B-PROPIOLACTONE IN A CONCENTRATION OF ABOUT 0.5 TO 0.001% BY WEIGHT.
Claim 2
Independent Claim
26 words
A METHOD OF STERILIZING AQUEOUS LIQUIDS CONTAINING SPORES OF BACTERIA COMPRISING, TREATING SAID LIQUIDS WITH B-PROPIOLACTONE IN A CONCENTRATION OF ABOUT 0.5 TO 0.001% BY WEIGHT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |