US3188256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal radiation method of measuring coating thickness
Assignee: AT&T Inc
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Filing: 1961-06-22
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Granted: 1965-06-08
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Expires: 1981-06-22
Abstract
No abstract record available.
Inventors
- 👤 John H Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:12
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/02; G01B11/06; G01B11/0616; G01B11/0658; B; B29; B29C; B29C48/00; B29C48/25; B29C48/92; B29C2948/00; B29C2948/92; B29C2948/92009; B29C2948/92076; B29C2948/92114; B29C2948/92152; B29C2948/92209; B29C2948/92323; B29C2948/92352; B29C2948/92428; B29C2948/92504; B29C2948/92571; B29C2948/92609; B29C2948/92647; B29C2948/92819; B29C2948/92847; B29C2948/92857; B29C2948/92904; B29C48/03; B29C48/05; B29C48/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
THE METHOD OF MEASURING THE THICKNESS OF A HOT COATING ON A HEAT CONDUCTING SUBSTRATE, WHICH COMPRISES THE STEPS OF ALLOWING THE HOT COATING TO COOL FROM A SELECTED TEMPERATURE FOR A PREDETERMINED PERIOD OF TIME, WHEREBY THE SUBSTRATE ACTS AS A LIMITED CAPACITY HEAT SINK BY CONDUCTING HEAT AWAY FROM THE COATING SO THAT THE TEMPERATURE OF THE COATING DECREASES AS AN INVERSE FUNCTION OF THE THICKNESS THEREOF; MEASURING THE INTENSITY OF THERMAL RADIATION EMITTED FROM A KNOWN AREA OF THE HOT COATING; AND CRRELATING SUCH THERMAL RADIATION MEASUREMENT WITH COATING THICKNESS.
Claim 2
Independent Claim
93 words
THE METHOD OF MEASURING THE THICKNESS OF A HOT COATING ON A HEAT CONDUCTING SUBSTRATE, WHICH COMPRISES THE STEPS OF ALLOWING THE HOT COATING TO COOL FROM A SELECTED TEMPERATURE FOR A PREDETERMINED PERIOD OF TIME, WHEREBY THE SUBSTRATE ACTS AS A LIMITED CAPACITY HEAT SINK BY CONDUCTING HEAT AWAY FROM THE COATING SO THAT THE TEMPERATURE OF THE COATING DECREASES AS AN INVERSE FUNCTION OF THE THICKNESS THEREOF; MEASURING THE INTENSITY OF THERMAL RADIATION EMITTED FROM A KNOWN AREA OF THE HOT COATING; AND CRRELATING SUCH THERMAL RADIATION MEASUREMENT WITH COATING THICKNESS.
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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |