US3287154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure responsive record materials
Assignee: Polaroid Corp
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Filing: 1965-12-13
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Granted: 1966-11-22
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Expires: 1985-12-13
Abstract
No abstract record available.
Inventors
- 👤 Howard C Haas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:18
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/02; B01J13/025; B41; B41M; B41M5/00; B41M5/124; B41M5/165; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2984; Y10T428/2985; Y10T428/2987
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
PRESSURE-SENSITIVE RECORD MATERIAL COMPRISING AT LEAST A FIRST AND SECOND SURFACE IN SUPERPOSED RELATIONSHIP, SAID FIRST SURFACE COMPRISING ALKALINE COLLOIDAL SILICA AND A FIRST REACTANT AND SAID SECOND SURFACE COMPRISING A SECOND REACTANT DISSOLVED IN A HIGH DI-ELECTRIC, HIGHLY POLAR ORGANIC LIQUID WHICH IS A SOLVENT FOR BOTH SAID FIRST REACTANT AND SAID SECOND REACTANT, SAID SECOND REACTANT AND SAID LIQUID BEING CONTAINED WITHIN PRESSURE-REPTURABLE CAPSULES OF POLYMERIC MATERIAL, SAID REACTANTS NORMALLY BEING HELD INSULATED FROM CONTACT WITH EACH OTHER BY REASON OF AT LEAST SAID SECOND REACTANT BEING CONTAINED WITHIN AID PRESSURE-RUPTURABLE CAPSULES, THE WALLS OF SAID CAPSULES BEING IMPROVIOUS TO BOTH OF SAID REACTANTS, SAID REACTANTS COMPRISING DITHOOXAMIDE AND A MIXTURE OF COOPER ACETATE AND NICKEL ACETATE, WHEREBY WRITING AND MARKING PRESSURES ON SAID RECORD MATERIAL INSTANTANTLY PRODUCE DENSE, BLACK MARKS AT POINTS OF PRESSURE ON AT LEAST SAID FIRST SURFACE.
Claim 2
Dependent Claim
143 words
PRESSURE-SENSITIVE RECORD MATERIAL COMPRISING AT LEAST A FIRST AND SECOND SURFACE IN SUPERPOSED RELATIONSHIP, SAID FIRST SURFACE COMPRISING ALKALINE COLLOIDAL SILICA AND A FIRST REACTANT AND SAID SECOND SURFACE COMPRISING A SECOND REACTANT DISSOLVED IN A HIGH DI-ELECTRIC, HIGHLY POLAR ORGANIC LIQUID WHICH IS A SOLVENT FOR BOTH SAID FIRST REACTANT AND SAID SECOND REACTANT, SAID SECOND REACTANT AND SAID LIQUID BEING CONTAINED WITHIN PRESSURE-REPTURABLE CAPSULES OF POLYMERIC MATERIAL, SAID REACTANTS NORMALLY BEING HELD INSULATED FROM CONTACT WITH EACH OTHER BY REASON OF AT LEAST SAID SECOND REACTANT BEING CONTAINED WITHIN AID PRESSURE-RUPTURABLE CAPSULES, THE WALLS OF SAID CAPSULES BEING IMPROVIOUS TO BOTH OF SAID REACTANTS, SAID REACTANTS COMPRISING DITHOOXAMIDE AND A MIXTURE OF COOPER ACETATE AND NICKEL ACETATE, WHEREBY WRITING AND MARKING PRESSURES ON SAID RECORD MATERIAL INSTANTANTLY PRODUCE DENSE, BLACK MARKS AT POINTS OF PRESSURE ON AT LEAST SAID FIRST SURFACE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |