US2594937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retarding composition
Assignee: Minnesota and Ontario Paper Co
•
Filing: 1949-09-06
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Granted: 1952-04-29
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Expires: 1969-09-06
Abstract
No abstract record available.
Inventors
- 👤 Edgar A Lauring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:46
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/18; C09D5/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A FLAME RETARDANT COMPOSITION ADAPTED FOR SURFACE APPLICATION TO FIBER COMPOSITION BOARD COMPRISING A THERMOPLASTIC PAINT VEHICLE, POWDERED SODIUM TETRABORATE 5H2O AS AN INORGANIC FOAM-FORMING INGREDIENT SUSPENDED IN THE PAINT VEHICLE, A PIGMENT CONSISTING OF ABOUT 80 PER CENT OF CALCIUM CARBONATE AND ABOUT 20 PER CENT LITHOPONE, AND BORIC ACID.
Claim 2
Dependent Claim
51 words
A FLAME RETARDANT COMPOSITION ADAPTED FOR SURFACE APPLICATION TO FIBER COMPOSITION BOARD COMPRISING A THERMOPLASTIC PAINT VEHICLE, POWDERED SODIUM TETRABORATE 5H2O AS AN INORGANIC FOAM-FORMING INGREDIENT SUSPENDED IN THE PAINT VEHICLE, A PIGMENT CONSISTING OF ABOUT 80 PER CENT OF CALCIUM CARBONATE AND ABOUT 20 PER CENT LITHOPONE, AND BORIC ACID.
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) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |