US2934439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preservation process with diepoxybutane
Assignee: Individual
•
Filing: 1959-02-18
•
Granted: 1960-04-26
•
Expires: 1979-02-18
Abstract
No abstract record available.
Inventors
- 👤 Michener Harold David
- 👤 James C Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:48
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/70; A23B2/725; A23B2/729; A23B2/771
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS FOR PRESERVING A SUBSTANCE NORMALLY SUBJECT TO MICROBIAL SPOILAGE WHICH COMPRISES INCORPORATING ABOUT FROM 50 TO 1000 P.P.M OF DIEPOXYBUTANE THEREWITH AND SUBJECTING IT TO HEAT SUFFICIENT TO PRODUCE AN ESSENTIALLY STERILE PRODUCT, THE COMBINATION OF TEMPERATURE AND TIME OF HEATING BEING SUBSTANTIALLY LESS THAN THAT REQUIRED TO ATTAIN STERILITY IN THE ABSENCE OF DIEPOXYBUTANE.
Claim 2
Dependent Claim
57 words
A PROCESS FOR PRESERVING A SUBSTANCE NORMALLY SUBJECT TO MICROBIAL SPOILAGE WHICH COMPRISES INCORPORATING ABOUT FROM 50 TO 1000 P.P.M OF DIEPOXYBUTANE THEREWITH AND SUBJECTING IT TO HEAT SUFFICIENT TO PRODUCE AN ESSENTIALLY STERILE PRODUCT, THE COMBINATION OF TEMPERATURE AND TIME OF HEATING BEING SUBSTANTIALLY LESS THAN THAT REQUIRED TO ATTAIN STERILITY IN THE ABSENCE OF DIEPOXYBUTANE.
References Cited (Backward Citations)
US1992292A
Cited
US2890119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |