US3303047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-sensitive element and process for preparing same
Assignee: EIDP Inc
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Filing: 1964-03-11
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Granted: 1967-02-07
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Expires: 1984-03-11
Abstract
No abstract record available.
Inventors
- 👤 Castle John Edwards
- 👤 Stevenson Halsey Bidwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:14
CPC Classifications
G; G01; G01B; G01B1/00; G01B5/00; G01B5/30; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249978; Y10T428/24998; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/266; Y10T428/269; Y10T428/31
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
48 words
A PRESSURE-SENSITIVE ELEMENT COMPRISING, IN ORDER: (A) A PRESSURE-INSENSITIVE, FLEXIBLE SHEET SUPPORT; (B) A SMOOTH LAYER OF OPAGUE, POROUS, PRESSURE-SENSITIVE MATERIAL HAVING MICROSCOPIC-SIZE VOIDS, AND (C) A STRATUM APPROXIMATELY 0.1X10**-6 TO 10**-3 INCH IN THICKNESS OF A METAL HAVING A HARDNESS OF LESS THAN 3 ON MOHNS'' SCALE.
Claim 2
Dependent Claim
48 words
A PRESSURE-SENSITIVE ELEMENT COMPRISING, IN ORDER: (A) A PRESSURE-INSENSITIVE, FLEXIBLE SHEET SUPPORT; (B) A SMOOTH LAYER OF OPAGUE, POROUS, PRESSURE-SENSITIVE MATERIAL HAVING MICROSCOPIC-SIZE VOIDS, AND (C) A STRATUM APPROXIMATELY 0.1X10**-6 TO 10**-3 INCH IN THICKNESS OF A METAL HAVING A HARDNESS OF LESS THAN 3 ON MOHNS'' SCALE.
Claim 3
Dependent Claim
68 words
A PROCESS FOR MAKING A PRESSURE-SENSITIVE ELEMENT WHICH COMPRISES (1) PRESSING THE SURFACE OF A LYER OF OPAQUE, POROUS, PRESSURE-SENSITIVE MATERIAL HAVING MICROSCOPIC-SIZE VOIDS ON A PRESSURE-INSENTITIVE FLEXIBLE SHEET SUPPORT AT A PRESSURE INSUFFICIENT TO COLLAPSE ALL OF THE PORES BUT SUFFICIENT TO FORM A SMOOTH, EVENLY REFLECTIVE SURFACE, AND (2) THEN DEPOSITING A REFLECTIVE FILM OF A SOFT METAL ON THE SMOOTH SURFACE OF THE POROUS LAYER.
Claim 4
Dependent Claim
68 words
A PROCESS FOR MAKING A PRESSURE-SENSITIVE ELEMENT WHICH COMPRISES (1) PRESSING THE SURFACE OF A LYER OF OPAQUE, POROUS, PRESSURE-SENSITIVE MATERIAL HAVING MICROSCOPIC-SIZE VOIDS ON A PRESSURE-INSENTITIVE FLEXIBLE SHEET SUPPORT AT A PRESSURE INSUFFICIENT TO COLLAPSE ALL OF THE PORES BUT SUFFICIENT TO FORM A SMOOTH, EVENLY REFLECTIVE SURFACE, AND (2) THEN DEPOSITING A REFLECTIVE FILM OF A SOFT METAL ON THE SMOOTH SURFACE OF THE POROUS LAYER.
References Cited (Backward Citations)
US3000757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |