US3411976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-marking record material
Assignee: 3M Co
•
Filing: 1966-03-21
•
Granted: 1968-11-19
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Expires: 1986-03-21
Abstract
No abstract record available.
Inventors
- 👤 Robert F Heliker
- 👤 Ray A Hunder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:02
CPC Classifications
G; G09; G09F; G09F3/00; G09F3/02; B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31859; Y10T428/3187; Y10T428/31873; Y10T428/3188; Y10T428/31895; Y10T428/31899
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROTECTIVE-PLASTIC SURFACED SELF-MARKING RECORD MATERIAL, COMPRISING A PRESSURE-RESPONSIVE SELF-IMAGING SUBSTRATE CARRYING NORMALLY SEPARATED IMAGE-FORMING REACTANTS WHICH COMBINE AND REACT UPON THE APPLICATION OF MARKING PRESSURE TO SAID SUBSTRATE, AT LEAST ONE OF SAID REACTANTS COMPRISING MICROSCIPICALLY SIZED PRESSUREREPTURABLE CAPSULES CONTAINING A LIQUID COLOR-FORMING REACTANT, AND A PROTECTIVE-PLASTIC COATING OVER SAID SUBSTRATE COMPRISING A LOCALLY EXTENSIBLE LAYER OF TRANSPARENT, FLEXIBLE, PLASTIC CAPABLE OF TRANSMITTING MARKING PRESSURES THEREON TO SAID SUBSTRATE TO CAUSE RUPTURE OF SAID CAPSULES BENEATH LOCAL AREAS TO WHICH PRESSURE IS APPLIED.
Claim 2
Dependent Claim
84 words
A PROTECTIVE-PLASTIC SURFACED SELF-MARKING RECORD MATERIAL, COMPRISING A PRESSURE-RESPONSIVE SELF-IMAGING SUBSTRATE CARRYING NORMALLY SEPARATED IMAGE-FORMING REACTANTS WHICH COMBINE AND REACT UPON THE APPLICATION OF MARKING PRESSURE TO SAID SUBSTRATE, AT LEAST ONE OF SAID REACTANTS COMPRISING MICROSCIPICALLY SIZED PRESSUREREPTURABLE CAPSULES CONTAINING A LIQUID COLOR-FORMING REACTANT, AND A PROTECTIVE-PLASTIC COATING OVER SAID SUBSTRATE COMPRISING A LOCALLY EXTENSIBLE LAYER OF TRANSPARENT, FLEXIBLE, PLASTIC CAPABLE OF TRANSMITTING MARKING PRESSURES THEREON TO SAID SUBSTRATE TO CAUSE RUPTURE OF SAID CAPSULES BENEATH LOCAL AREAS TO WHICH PRESSURE IS APPLIED.
References Cited (Backward Citations)
US2548366A
Cited
US3287154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |