US3324723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating devices for heat treatment
Assignee: Macarthys Ltd
•
Filing: 1965-03-04
•
Granted: 1967-06-13
•
Expires: 1985-03-04
Abstract
No abstract record available.
Inventors
- 👤 Ritchie Alan Rutherford
- 👤 Holland Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:02
CPC Classifications
G; G01; G01K; G01K3/00; G01K3/02; G01K3/04; A; A61; A61L; A61L2/00; A61L2/26; A61L2/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
AN INDICATING DEVICE FOR VISUALLY INDICATING A HEAT TREATMENT, SAID DEVICE COMPRISING A WICK OF PRE-DETERMINED LENGTH, SAID WICK INCLUDING A HEAT-CONDUCTING LAYER AND HAVING A SOLIDIFIED DROP OF A FUSIBLE COLORED INDICATING MATERIAL ATTACHED TO AND EVELOPING ONE END THEREOF, SAID MATERIAL IMPREGNATING SAID ONE END OF SAID WICK ONLY AT SAID ONE END, SAID INDICATING MATERIAL BEING SOLID AT ROOM TEMPERATURE AND HAVING A MELTING POINT OF BETWEEN 80* C. AND 300* C.
Claim 2
Dependent Claim
75 words
AN INDICATING DEVICE FOR VISUALLY INDICATING A HEAT TREATMENT, SAID DEVICE COMPRISING A WICK OF PRE-DETERMINED LENGTH, SAID WICK INCLUDING A HEAT-CONDUCTING LAYER AND HAVING A SOLIDIFIED DROP OF A FUSIBLE COLORED INDICATING MATERIAL ATTACHED TO AND EVELOPING ONE END THEREOF, SAID MATERIAL IMPREGNATING SAID ONE END OF SAID WICK ONLY AT SAID ONE END, SAID INDICATING MATERIAL BEING SOLID AT ROOM TEMPERATURE AND HAVING A MELTING POINT OF BETWEEN 80* C. AND 300* C.
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) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |