Patent US2730457A successfully refreshed from Google Patents.
US2730457A
Expired / Lapsed
US
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Pressure responsive record materials
Assignee: NCR Voyix Corp
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Filing: 1953-06-30
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Granted: 1956-01-10
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Expires: 1973-06-30
Abstract
No abstract record available.
Inventors
- 👤 Barrett K Green
- 👤 Schleicher Lowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:22
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/165; B01; B01J; B01J13/00; B01J13/02; B01J13/06; B01J13/10; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2984
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
PRESSURE-SENSITIVE RECORD MATERIAL CONSISTING OF A SHEET OF PAPER ON A SURFACE OF WHICH IS A DRY COATING INCLUDING, IN CONTACT WITH EACH OTHER, MICROSCOPIC OILCONTAINING PRESSURE-RUPTURABLE CAPSULES OF DENSE, OILIMPERMEABLE GELLED HYDROPHILIC-COLLOID MATERIAL, THE WALLS OF EACH CAPSULE BEING OIL-IMPERVIOUS AND CHARACTERIZED BY HAVING BEEN DEPOSITED BY COACERVATION FORCES EVENLY AROUND A NUCLEUS OF OIL, AND MICROSCOPIC PARTICLES OF SOLID MATERIAL, THE OIL IN THE CAPSULES BEING WATER-IMMISCIBLE AND REACTANT ON CONTACT WITH THE PARTICLES OF SOLID MATERIAL TO PRODUCE A DISTINCTIVE COLOR, WHEREBY WRITING AND MARKING PRESSURES, ALONE, ON SAID RECORD MATERIAL PRODUCE DISTINCTIVELY COLORED MARKS AT POINTS OF PRESSURE.
Claim 2
Dependent Claim
102 words
PRESSURE-SENSITIVE RECORD MATERIAL CONSISTING OF A SHEET OF PAPER ON A SURFACE OF WHICH IS A DRY COATING INCLUDING, IN CONTACT WITH EACH OTHER, MICROSCOPIC OILCONTAINING PRESSURE-RUPTURABLE CAPSULES OF DENSE, OILIMPERMEABLE GELLED HYDROPHILIC-COLLOID MATERIAL, THE WALLS OF EACH CAPSULE BEING OIL-IMPERVIOUS AND CHARACTERIZED BY HAVING BEEN DEPOSITED BY COACERVATION FORCES EVENLY AROUND A NUCLEUS OF OIL, AND MICROSCOPIC PARTICLES OF SOLID MATERIAL, THE OIL IN THE CAPSULES BEING WATER-IMMISCIBLE AND REACTANT ON CONTACT WITH THE PARTICLES OF SOLID MATERIAL TO PRODUCE A DISTINCTIVE COLOR, WHEREBY WRITING AND MARKING PRESSURES, ALONE, ON SAID RECORD MATERIAL PRODUCE DISTINCTIVELY COLORED MARKS AT POINTS OF PRESSURE.
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) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |