Patent US2640753A successfully refreshed from Google Patents.
US2640753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sterilizing air
Assignee: Individual
•
Filing: 1950-02-07
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Granted: 1953-06-02
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Expires: 1970-02-07
Abstract
No abstract record available.
Inventors
- 👤 Harold B Morris
- 👤 Courtland B Meuser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:59
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD OF INACTIVATING LARGE PERCENTAGES OF PATHOGENIC AIR-BONE ORGANISMS WITHIN AN AIR SPACE WHICH IS AT LEAST PARTIALLY CONFINED, WHICH COMPRISES MATINTAINING IN SAID SPACE OVER A SUBSTANTIAL PERIOD OF TIME, AT ROOM TEMPERATURE, A CONCENTRATION IN EACH TWO HUNDRED THOUSAND TO FIFTY MILLION PARTS OF AIR OF ONE PART OF A GLYCOL ETHER HAVING A VAPOR PRESSURE OF 0.08 TO 10 MM. OF MERCURY AT 20* C.
Claim 2
Independent Claim
69 words
A METHOD OF INACTIVATING LARGE PERCENTAGES OF PATHOGENIC AIR-BONE ORGANISMS WITHIN AN AIR SPACE WHICH IS AT LEAST PARTIALLY CONFINED, WHICH COMPRISES MATINTAINING IN SAID SPACE OVER A SUBSTANTIAL PERIOD OF TIME, AT ROOM TEMPERATURE, A CONCENTRATION IN EACH TWO HUNDRED THOUSAND TO FIFTY MILLION PARTS OF AIR OF ONE PART OF A GLYCOL ETHER HAVING A VAPOR PRESSURE OF 0.08 TO 10 MM. OF MERCURY AT 20* C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |