US4045603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction material of recycled waste thermoplastic synthetic resin and cellulose fibers
Assignee: Individual
•
Filing: 1975-10-28
•
Granted: 1977-08-30
•
Expires: 1995-10-28
Abstract
Abstract A three layer building panel material product made from recycled waste thermoplastic synthetic resin material and cellulose fibers aggregate, outer layers of which substantially comprise reset pressure rolled, heat-fused, and re-hardened thermoplastic synthetic resin bits, and having a core of cellulose fiber aggregate bonded by re-hardened heat-fused thermoplastic synthetic resin bits pressure bonded to the outer layers.
Inventors
- 👤 Teddy Van Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:43
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; Y; Y10; Y10S; Y10S264/00; Y10S264/911; Y10S264/916; Y10T; Y10T428/00; Y10T428/16; Y10T428/163; Y10T428/168; Y10T428/19; Y10T428/192; Y10T428/197; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/2438; Y10T428/24405; Y10T428/25; Y10T428/253; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31971; Y10T428/31989
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
76 words
A construction material comprising respective opposite face surfaces, said opposite face surfaces being contiguous with an intervening core material, said face surfaces consisting essentially of a re-hardened fused and rolled layer of thermoplastic synthetic resin material bits, said intervening core material consisting essentially of a compressed non-homogeneous mixture of cellulose aggregate material bits and re-hardened fused thermoplastic synthetic resin material bits, with said face surfaces being fused to respective opposite surfaces of said intervening core material.
Claim 2
Dependent Claim
76 words
A construction material comprising respective opposite face surfaces, said opposite face surfaces being contiguous with an intervening core material, said face surfaces consisting essentially of a re-hardened fused and rolled layer of thermoplastic synthetic resin material bits, said intervening core material consisting essentially of a compressed non-homogeneous mixture of cellulose aggregate material bits and re-hardened fused thermoplastic synthetic resin material bits, with said face surfaces being fused to respective opposite surfaces of said intervening core material.
Claim 3
Dependent Claim
40 words
The material of claim 1, with respective opposite edges between said face surfaces consisting essentially of a re-hardened fused thermoplastic synthetic resin material bit layer fused respectively to the respective edge extremes of said face surfaces and intervening core material.
Claim 4
Dependent Claim
14 words
The material of claim 2, with said cellulose aggregate material including chopped tree bark.
Claim 5
Dependent Claim
22 words
A construction material consisting essentially of a pressure rolled non-homogeneous mixture of cellulose aggregate and re-hardened fused thermoplastic synthetic resin material bits.
Claim 6
Dependent Claim
22 words
A construction material consisting essentially of a pressure rolled non-homogeneous mixture of cellulose aggregate and re-hardened fused thermoplastic synthetic resin material bits.
Claim 7
Dependent Claim
45 words
The material of claim 4, with additional layers consisting essentially of re-hardened, fused, thermoplastic synthetic resin material bits on respective opposite planar surfaces, said additional layers being integrally fused to the intervening aggregate-containing portion of said material to define substantially uniformly smooth material planar surfaces.
Claim 8
Dependent Claim
13 words
The material of claim 5, with said cellulose aggregate including chopped tree bark.
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) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |