Patent US3684737A successfully refreshed from Google Patents.
US3684737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating composition for indicating sterilization
Assignee: MASK OFF CO
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Filing: 1969-08-25
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Granted: 1972-08-15
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Expires: 1989-08-25
Abstract
Abstract COATING COMPOSITIONS FOR USE IN INDICATING STERILIZATION BY ETHYLENE OXIDE, STEAM OR DRY HEAT ARE DISCLOSED. THESE COMPOSITIONS INCLUDE A HALIDE SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF IRON, COBALT AND NICKEL, A PIGMENT WHICH WILL ACCENTUATE SO AS TO MAKE MORE EASILY VISIBLE ANY CHANGE IN COLOR RESULTING FROM REACTION OF SUCH SALT, AND A BINDER MATERIAL WHICH WILL SUSPEND AND HOLD THE SALT AND THE PIGMENT IN PROXIMITY WITH ONE ANOTHER.
Inventors
- 👤 John H Emigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:47
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/26; A61L2/28; Y; Y10; Y10T; Y10T436/00; Y10T436/14; Y10T436/142222
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |