US2998306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telltale for ethylene oxide sterilization
Assignee: Aseptic Thermo Indicator Co
•
Filing: 1960-04-15
•
Granted: 1961-08-29
•
Expires: 1980-04-15
Abstract
No abstract record available.
Inventors
- 👤 Willard M Huyck
- 👤 Vincent A Romito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:22
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; G01N31/221; Y; Y10; Y10S; Y10S116/00; Y10S116/14; Y10T; Y10T436/00; Y10T436/14; Y10T436/142222
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A TELLTALE DEVICE FOR ETHYLENE OXIDE STERILIZATION COMPRISING A PAD HAVING AN INDICATOR LIQUID ABSORBED THEREIN, AND A MEMBRANE OF SYNTHETIC PLASTIC MATERIAL ENCLOSING SAID PAD, SAID MEMBRANE BEING PERMEABLE TO ETHYLENE OXIDE GAS, SAID INDICATOR LIQUID BEING COMPOSED ESSENTIALLY OF AN AQUEOUS MAGNESIUM CHLORIDE SOLUTION, AN ACID SOLUBLE IN SAID AQUEOUS SOLUTION, AND AN ACID-ALKALI INDICATOR DYE DISPERSED IN SAID LIQUID.
Claim 2
Dependent Claim
62 words
A TELLTALE DEVICE FOR ETHYLENE OXIDE STERILIZATION COMPRISING A PAD HAVING AN INDICATOR LIQUID ABSORBED THEREIN, AND A MEMBRANE OF SYNTHETIC PLASTIC MATERIAL ENCLOSING SAID PAD, SAID MEMBRANE BEING PERMEABLE TO ETHYLENE OXIDE GAS, SAID INDICATOR LIQUID BEING COMPOSED ESSENTIALLY OF AN AQUEOUS MAGNESIUM CHLORIDE SOLUTION, AN ACID SOLUBLE IN SAID AQUEOUS SOLUTION, AND AN ACID-ALKALI INDICATOR DYE DISPERSED IN SAID LIQUID.
References Cited (Backward Citations)
US1735219A
Cited
DE1031545B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |