US3065083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time-delay temperature indicator
Assignee: Individual
•
Filing: 1958-01-02
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Granted: 1962-11-20
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Expires: 1978-01-02
Abstract
No abstract record available.
Inventors
- 👤 Albert E Gessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:08
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; G01N31/229; A; A23; A23B; A23B7/00; A23B7/04; A23B7/0441
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A TIME-DELAY TEMPERATURE INDICATOR COMPRISING A FLAT ENVELOPE CARRYING ON ITS INSIDE A THIN BARRIER FILM OF A FAT SOLUBLE HIGH POLYMER OBTAINED BY COPOLYMERIZING ISOBUTYLENE AND STYRENE, A SPOT OF A BASIC DYE BASE OF RELATIVELY LOW COLORATION CAPABLE OF PRODUCING INTENSE COLOR IN THE PRESENCE OF A FATTY ACID, SPREAD IN A THIN FILM, AND IN CONTACT WITH THE BARRIER MATERIAL , A FATTY REACTANT CONSISTING OF A LONG CHAIN FATTY ACID WITH A MELTING POINT APPROXIMATING THE TEMPERATURE DESIRED TO BE INDICATED, WHICH REACTANT WHEN MOLTEN IS A SOLVENT FOR THE BARRIER
Claim 2
Dependent Claim
95 words
A TIME-DELAY TEMPERATURE INDICATOR COMPRISING A FLAT ENVELOPE CARRYING ON ITS INSIDE A THIN BARRIER FILM OF A FAT SOLUBLE HIGH POLYMER OBTAINED BY COPOLYMERIZING ISOBUTYLENE AND STYRENE, A SPOT OF A BASIC DYE BASE OF RELATIVELY LOW COLORATION CAPABLE OF PRODUCING INTENSE COLOR IN THE PRESENCE OF A FATTY ACID, SPREAD IN A THIN FILM, AND IN CONTACT WITH THE BARRIER MATERIAL , A FATTY REACTANT CONSISTING OF A LONG CHAIN FATTY ACID WITH A MELTING POINT APPROXIMATING THE TEMPERATURE DESIRED TO BE INDICATED, WHICH REACTANT WHEN MOLTEN IS A SOLVENT FOR THE BARRIER
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) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |