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Assignee: Johnson and Johnson
•
Filing: 1964-12-24
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Granted: 1967-12-26
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Expires: 1984-12-24
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Abstract

No abstract record available.

Inventors

  • 👤 Martin I Edenbaum

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 21:33
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/50; A; A61; A61L; A61L2/00; A61L2/26; A61L2/28

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 72 words
IN A STEAM STERILIZATION INDICATING DEVICE OF THE TYPE COMPRISING A BASE AND CONTAINING MARKINGS THEREON WHICH CHANGE COLOR WHEN EXPOSED TO THE CONDITIONS OF STEAM STERILIZATION, THE IMPROVEMENT COMPRISING: SAID MARKING COMPRISING A STEAM PERMEABLE CARRIER FILM CONTAINING AN INTIMATE MIXTURE OF SELENIUM DIMETHYLDITHIOCARBAMATE WITH AT LEAST ONE MATERIAL OF THE GROUP CONSISTING OF BISMUTH CITRATE, BISMUTH OXYCHLORIDE, BISMUTH SUBCARBONATE, BISMUTH SUBGALLATE, BISMUTH SUBSALICYLATE, BISMUTH TRIOXIDE, BISMUTH SUBNITRATE AND LEAD CHROMATE.
Claim 2
Dependent Claim 72 words
IN A STEAM STERILIZATION INDICATING DEVICE OF THE TYPE COMPRISING A BASE AND CONTAINING MARKINGS THEREON WHICH CHANGE COLOR WHEN EXPOSED TO THE CONDITIONS OF STEAM STERILIZATION, THE IMPROVEMENT COMPRISING: SAID MARKING COMPRISING A STEAM PERMEABLE CARRIER FILM CONTAINING AN INTIMATE MIXTURE OF SELENIUM DIMETHYLDITHIOCARBAMATE WITH AT LEAST ONE MATERIAL OF THE GROUP CONSISTING OF BISMUTH CITRATE, BISMUTH OXYCHLORIDE, BISMUTH SUBCARBONATE, BISMUTH SUBGALLATE, BISMUTH SUBSALICYLATE, BISMUTH TRIOXIDE, BISMUTH SUBNITRATE AND LEAD CHROMATE.

References Cited (Backward Citations)

US2889799A Cited
US2873234A Cited
US3028254A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1970-12-25 1971-06-26 1971-12-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1974-12-25 1975-06-26 1975-12-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1978-12-25 1979-06-26 1979-12-26 $7700.00 Window Closed / Lapsed

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