US3335017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper with release coating and process for making same
Assignee: Warren SD Co
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Filing: 1962-03-14
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Granted: 1967-08-08
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Expires: 1982-03-14
Abstract
No abstract record available.
Inventors
- 👤 Millard C Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:17
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/80; D21H19/82; D21H19/826; D21H19/10; D21H19/12; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A RELEASE PAPER COMPRISING A FIBROUS BASE AND BEARING ON AT LEAST ONE SURFACE THEREOF AN INSOLUBLE, CONTINUOUS TOP COATING COMPRISING THE EVAPORATION RESIDUE OF AN AQUEOUS SOLUTION OF HYDROPHILIC COLLOID AND THE DECOMPOSITION PRODUCTS OF AN ALKALI METAL ALKYL SILICONATE HEAT-CURED AT AT LEAST 250*F., SAID COATING BEING EASILY SEPARABLE FROM HOT AND COLD THERMOPLASTIC AND THERMOSETTINMG RESINOUS MATERIALS.
Claim 2
Dependent Claim
60 words
A RELEASE PAPER COMPRISING A FIBROUS BASE AND BEARING ON AT LEAST ONE SURFACE THEREOF AN INSOLUBLE, CONTINUOUS TOP COATING COMPRISING THE EVAPORATION RESIDUE OF AN AQUEOUS SOLUTION OF HYDROPHILIC COLLOID AND THE DECOMPOSITION PRODUCTS OF AN ALKALI METAL ALKYL SILICONATE HEAT-CURED AT AT LEAST 250*F., SAID COATING BEING EASILY SEPARABLE FROM HOT AND COLD THERMOPLASTIC AND THERMOSETTINMG RESINOUS MATERIALS.
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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |