US3383274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flameproofing of construction material
Assignee: US Plywood Champion Papers Inc
•
Filing: 1965-01-06
•
Granted: 1968-05-14
•
Expires: 1985-01-06
Abstract
No abstract record available.
Inventors
- 👤 Don W Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:03
CPC Classifications
B; B27; B27N; B27N9/00; C; C08; C08L; C08L97/00; C08L97/02; C08L2201/00; C08L2201/02; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/25; Y10T428/253; Y10T428/258
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A FLAMEPROOF WOOD ARTICLE OF SUPERIOR QUALITY AND STRENGTH WHICH COMPRISES A LOWER FACE LAYER OF ADHERED SMALL DIMENSIONED WOOD PARTICLES HAVING UNIFORMLY DISTRIBUTED THERETHROUGH CRYSTALS OF AN AMMONIUM SALT TAKEN FROM THE GROUP CONSISTING OF AMMONIUM PHOSPHATES, AMMONIUM BROMIDE AND AMMONIUM SULPHATE, A CORE LAYER OF ADHERED LARGE DIMENSIONED WOOD PARTICLES HAVING UNIFORMLY DISTRIBUTED THERETHROUGH CRYSTALS OF SAID AMMONIUM SALT, A TOP FACE LAYER OF ADHERED SMALL DIMENSIONED WOOD PARTICLES HAVING UNIFORMLY DISTRIBUTED THERETHROUGH CRYSTALS OF SAID AMMONIUM SALT, SAID LAYERS BEING RIGIDLY ADHERED TO ONE ANOTHER BY A RESIN BINDER.
Claim 2
Dependent Claim
92 words
A FLAMEPROOF WOOD ARTICLE OF SUPERIOR QUALITY AND STRENGTH WHICH COMPRISES A LOWER FACE LAYER OF ADHERED SMALL DIMENSIONED WOOD PARTICLES HAVING UNIFORMLY DISTRIBUTED THERETHROUGH CRYSTALS OF AN AMMONIUM SALT TAKEN FROM THE GROUP CONSISTING OF AMMONIUM PHOSPHATES, AMMONIUM BROMIDE AND AMMONIUM SULPHATE, A CORE LAYER OF ADHERED LARGE DIMENSIONED WOOD PARTICLES HAVING UNIFORMLY DISTRIBUTED THERETHROUGH CRYSTALS OF SAID AMMONIUM SALT, A TOP FACE LAYER OF ADHERED SMALL DIMENSIONED WOOD PARTICLES HAVING UNIFORMLY DISTRIBUTED THERETHROUGH CRYSTALS OF SAID AMMONIUM SALT, SAID LAYERS BEING RIGIDLY ADHERED TO ONE ANOTHER BY A RESIN BINDER.
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) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |