US2937279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sterilization indicator
Assignee: Ethicon Inc
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Filing: 1957-10-25
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Granted: 1960-05-17
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Expires: 1977-10-25
Abstract
No abstract record available.
Inventors
- 👤 Artandi Charles
- 👤 Stonehill Albert Adam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:44
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; G01N31/226
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
IN A PACKAGE ADAPTED TO BE PASSED THROUGH A FIELD OF HIGH ENERGY RADIATION AND CONTAINING MATERIAL TO BE STERILIZED BY SAID RADIATION, AN INDICATOR COMPRISING A MEMBER SELECTED FROM THE GROUP CONSISTING OF RIGID, RADIATION SENSITIVE POLYVINYL CHLORIDE AND COPOLYMERS THEREOF CONTAINING AT LEAST 70 PERCENT POLYVINYL CHLORIDE, SAID INDICATOR CONTAINING LESS THAN ABOUT 5 PERCENT PLASTICIZER, WHICH UPON EXPOSURE TO HIGH ENERGY IRRADIATION IN AMOUNTS OF AT LEAST 1 MEGA REP IS CONVERTED TO A DISTINCT COLOR.
Claim 2
Dependent Claim
79 words
IN A PACKAGE ADAPTED TO BE PASSED THROUGH A FIELD OF HIGH ENERGY RADIATION AND CONTAINING MATERIAL TO BE STERILIZED BY SAID RADIATION, AN INDICATOR COMPRISING A MEMBER SELECTED FROM THE GROUP CONSISTING OF RIGID, RADIATION SENSITIVE POLYVINYL CHLORIDE AND COPOLYMERS THEREOF CONTAINING AT LEAST 70 PERCENT POLYVINYL CHLORIDE, SAID INDICATOR CONTAINING LESS THAN ABOUT 5 PERCENT PLASTICIZER, WHICH UPON EXPOSURE TO HIGH ENERGY IRRADIATION IN AMOUNTS OF AT LEAST 1 MEGA REP IS CONVERTED TO A DISTINCT COLOR.
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) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |