Patent US4427818A successfully refreshed from Google Patents.
US4427818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic polymer concrete structure and method
Assignee: Individual
•
Filing: 1981-05-15
•
Granted: 1984-01-24
•
Expires: 2001-05-15
Abstract
Abstract A thermoplastic polymer concrete block constructed of contaminated thermoplastic resin scrap, previously considered unusable and unrecyclable, and fill material produced by mixing the thermoplastic resin scrap and fill material, heating the mixed thermoplastic resin scrap and fill materials and placing them in molds having a desired shape, wherein they cool and set into the desired product.
Inventors
- 👤 Richard C. Prusinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:29
CPC Classifications
B; B29; B29B; B29B17/00; B29B17/0026; B29B17/0042; C; C08; C08J; C08J11/00; C08J11/04; C08J11/06; E; E04; E04C; E04C1/00; E04C1/40; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/0608; B29K2023/0633; B29K2023/065; B29K2055/00; B29K2055/02; B29K2105/00; B29K2105/06; B29K2105/16; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62; Y10; Y10S; Y10S264/00; Y10S264/911; Y10S264/915; Y10S52/00; Y10S52/09
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
61 words
A polymer structure comprising a mixture of precontaminated otherwise unusable, unrecyclable, thermoplastic, offal, scrap plastic, resins and fillers therefor having the approximate composition of 25% ABS, 25% sand, 25% low density polyethylene and 25% high density polyethylene by weight, which polymer structure results from heating the resins, mixing the fillers therein and allowing the mixture to cool in a mold form.
Claim 2
Dependent Claim
61 words
A polymer structure comprising a mixture of precontaminated otherwise unusable, unrecyclable, thermoplastic, offal, scrap plastic, resins and fillers therefor having the approximate composition of 25% ABS, 25% sand, 25% low density polyethylene and 25% high density polyethylene by weight, which polymer structure results from heating the resins, mixing the fillers therein and allowing the mixture to cool in a mold form.
Claim 3
Dependent Claim
53 words
A polymer structure comprising a mixture of precontaminated thermoplastic resins and fillers therefor having the approximate composition of 25% ABS, 25% sand, 25% low density polyethylene and 25% high density polyethylene by weight, resulting from heating the precontaminated resins, mixing the fillers therein, and allowing the mixture to cool in a mold form.
Claim 4
Dependent Claim
53 words
A polymer structure comprising a mixture of precontaminated thermoplastic resins and fillers therefor having the approximate composition of 25% ABS, 25% sand, 25% low density polyethylene and 25% high density polyethylene by weight, resulting from heating the precontaminated resins, mixing the fillers therein, and allowing the mixture to cool in a mold form.
Claim 5
Dependent Claim
47 words
A polymer structure comprising a mixture of precontaminated thermoplastic resins and fillers therefor having the approximate composition of 33% ABS, 33% sand, and 33% polyethylene by weight, resulting from heating the precontaminated resins, mixing the fillers therein, and allowing the mixture to cool in a mold form.
Claim 6
Dependent Claim
47 words
A polymer structure comprising a mixture of precontaminated thermoplastic resins and fillers therefor having the approximate composition of 33% ABS, 33% sand, and 33% polyethylene by weight, resulting from heating the precontaminated resins, mixing the fillers therein, and allowing the mixture to cool in a mold form.
Claim 7
Dependent Claim
55 words
A polymer structure comprising a mixture of precontaminated thermoplastic resins, which are other wise unusable, unrecyclable scrap plastics and fillers therefor having the approximate composition of 33% ABS, 33% sand, and 33% polyethylene by weight, resulting from heating the precontaminated resins, mixing the fillers therein, and allowing the mixture to cool in a mold form.
Claim 8
Dependent Claim
55 words
A polymer structure comprising a mixture of precontaminated thermoplastic resins, which are other wise unusable, unrecyclable scrap plastics and fillers therefor having the approximate composition of 33% ABS, 33% sand, and 33% polyethylene by weight, resulting from heating the precontaminated resins, mixing the fillers therein, and allowing the mixture to cool in a mold form.
References Cited (Backward Citations)
US2311233A
Cited
US4058406A
Cited
US3645961A
Cited
US3640912A
Cited
US3712825A
Cited
GB1369204A
Cited
US4250222A
Cited
US4019919A
Cited
US4169180A
Cited
US4160761A
Cited
US4234632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-23 | 1987-07-25 | 1988-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-23 | 1991-07-25 | 1992-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-23 | 1995-07-25 | 1996-01-24 | $7700.00 | Window Closed / Lapsed |