US3194669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condition responsive devices
Assignee: Honeywell Inc
•
Filing: 1961-12-26
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Granted: 1965-07-13
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Expires: 1981-12-26
Abstract
No abstract record available.
Inventors
- 👤 Robert B Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:56
CPC Classifications
G; G01; G01K; G01K11/00; G01K11/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A DEVICE FOR INDICATING THAT AN ARTICLE HAS UNDERGONE A FREEZING AND SUBSEQUENT THAWING COMPRISING A TRANSPARENT WATER IMPERVIOUS ENVELOPE DEFINING A CAVITY, SAID CAVITY CONTAING AT LEAST ONE FREE MEMBER ARRANGED IN A PREDETERMINED RELATIONSHIP WITHIN SAID CAVITY AND MAINTAINED IN SAID SPACED RELATIONSHIP BY A SILICA GEL COMPOSITION WHICH SUBSTANITALLY FILLS THE BALANCE OF SAID CAVITY, SAID GEL COMPOSITION CHARACTERIZED IN THAT THE GEL STRUCTURE IS UBSTANTIALLY DESTROYED UPON FREEZING THEREOF.
Claim 2
Independent Claim
73 words
A DEVICE FOR INDICATING THAT AN ARTICLE HAS UNDERGONE A FREEZING AND SUBSEQUENT THAWING COMPRISING A TRANSPARENT WATER IMPERVIOUS ENVELOPE DEFINING A CAVITY, SAID CAVITY CONTAING AT LEAST ONE FREE MEMBER ARRANGED IN A PREDETERMINED RELATIONSHIP WITHIN SAID CAVITY AND MAINTAINED IN SAID SPACED RELATIONSHIP BY A SILICA GEL COMPOSITION WHICH SUBSTANITALLY FILLS THE BALANCE OF SAID CAVITY, SAID GEL COMPOSITION CHARACTERIZED IN THAT THE GEL STRUCTURE IS UBSTANTIALLY DESTROYED UPON FREEZING THEREOF.
References Cited (Backward Citations)
US2750294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |