US3087836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flameproof paper and process of making same
Assignee: Hooker Chemical Corp
•
Filing: 1959-10-12
•
Granted: 1963-04-30
•
Expires: 1979-10-12
Abstract
No abstract record available.
Inventors
- 👤 Robert J Dearborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:10
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/36; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/244; D06M15/37; D06M15/39; D06M15/423; D06M15/43; D06M15/431; D21H21/34; D21H5/00; D21H5/0002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A FLEXIBLE, FLAME-RETARDANT PAPER HAVING A RESINOUS COATING WHICH COMPRISES THE REACTION PRODUCT OF: (A) FROM TEN TO THIRTY PARTS BY WEIGHT OF TETRAKIS (HYDROXYMETHYL) PHOSPHONIUM CHLORIDE, (B) FROM TWO TEN PARTS BY WEIGHT OF TRIETHANOLAMINE, (C) FROM TEN TO FIFTY PARTS BY WEIGHT OF VINYL CHLORIDE-VINYLIDENE CHLORIDE COPOLYMER LATEX, AND (D) UP TO SEVENTY-FIVE PARTS BY WEIGHT OF UREA-FORMALDEHYDE PRECONDENSATE; WHEREIN THE RESIN ADDON IS FROM ABOUT TWENTY TO ABOUT FORTY PERCENT BY WEIGHT OF THE PAPER.
Claim 2
Dependent Claim
78 words
A FLEXIBLE, FLAME-RETARDANT PAPER HAVING A RESINOUS COATING WHICH COMPRISES THE REACTION PRODUCT OF: (A) FROM TEN TO THIRTY PARTS BY WEIGHT OF TETRAKIS (HYDROXYMETHYL) PHOSPHONIUM CHLORIDE, (B) FROM TWO TEN PARTS BY WEIGHT OF TRIETHANOLAMINE, (C) FROM TEN TO FIFTY PARTS BY WEIGHT OF VINYL CHLORIDE-VINYLIDENE CHLORIDE COPOLYMER LATEX, AND (D) UP TO SEVENTY-FIVE PARTS BY WEIGHT OF UREA-FORMALDEHYDE PRECONDENSATE; WHEREIN THE RESIN ADDON IS FROM ABOUT TWENTY TO ABOUT FORTY PERCENT BY WEIGHT OF THE PAPER.
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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |