Patent US3850771A successfully refreshed from Google Patents.
US3850771A
Expired / Lapsed
US
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Making of useful products from cellulose-containing garbage
Assignee: Biocel Corp
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Filing: 1971-01-08
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Granted: 1974-11-26
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Expires: 1991-01-08
Abstract
Abstract Useful structural products such as blocks, boards, strips and pellets are made from garbage by utilizing the cellulose content of the garbage as a binder for the garbage proper. A small portion of the garbage to be made into a useful product is removed from the mass of the garbage and is subjected to a xanthation process, converting the cellulose to cellulose xanthate. The thus converted cellulose xanthate is then mixed with the main mass of garbage, and that mixture is then subjected to conditions suitable to convert the cellulose xanthate to cellulose. the thus-formed cellulose acts as a binder for the mass of garbage, ensuring that it will retain its shape after formation by molding, extrusion or the like.
Inventors
- 👤 R Penque
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:53
CPC Classifications
D; D21; D21C; D21C5/00; D21C5/02; B; B03; B03B; B03B9/00; B03B9/06; C; C05; C05B; C05B3/00; C05B7/00; C05F; C05F9/00; C08; C08L; C08L99/00; D21B; D21B1/00; D21B1/02; D21B1/026; D21B1/04; D21B1/12; D21B1/30; D21B1/303; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/20; Y02W; Y02W30/00; Y02W30/40; Y02W30/50; Y02W30/64; Y10; Y10S; Y10S162/00; Y10S162/09
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
60 words
A METHOD OF MAKING A USEFUL PRODUCT COMPRISING XANTHATING SOLID WASTE SELECTED FROM ANAEROBICALLY TREATED GARBAGE, AEROBICALLY TREATED GARBAGE, COMPOSTED GARBAGE OR COMMINUTED GARBAGE CONTAINING CELLULOSE TO FORM CELLULOSE XANTHATE, MIXING SAID XANTHATED SOLID WASTE WITH OTHER SUCH SOLID WASTE, AND TREATING SAID MIXTURE TO RECONVERT THE CELLULOSE XANTHATE IN SITU TO FORM A BINDER THROUGHOUT THE SOLID WASTE MASS.
Claim 2
Independent Claim
60 words
A METHOD OF MAKING A USEFUL PRODUCT COMPRISING XANTHATING SOLID WASTE SELECTED FROM ANAEROBICALLY TREATED GARBAGE, AEROBICALLY TREATED GARBAGE, COMPOSTED GARBAGE OR COMMINUTED GARBAGE CONTAINING CELLULOSE TO FORM CELLULOSE XANTHATE, MIXING SAID XANTHATED SOLID WASTE WITH OTHER SUCH SOLID WASTE, AND TREATING SAID MIXTURE TO RECONVERT THE CELLULOSE XANTHATE IN SITU TO FORM A BINDER THROUGHOUT THE SOLID WASTE MASS.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein said solid waste contains about 40-75% cellulose.
Claim 4
Dependent Claim
52 words
The method of claim 1 wherein said solid waste is selected from composted standardized municipal solid waste or aerobically digested solid waste prepared according to U.S. East Coast Standard as set forth in U.S. Public Health Publication No. 1729, July 1967, page 93, or solid composted waste from a Jamaican windrow operation.
Claim 5
Dependent Claim
40 words
The method of claim 1 wherein said mixture is compressed to expel water and thus reconvert the cellulose xanthate to cellulose, the compression acting to form said mixture into a discrete shape which is retained by the precipitated cellulose binder.
Claim 6
Dependent Claim
19 words
The method of claim 1 wherein said xanthated portion comprises about 1% of the total mass of solid waste.
Claim 7
Dependent Claim
19 words
The method of claim 1 wherein said xanthated and unxanthated solid waste portions are derived from the same source.
Claim 8
Independent Claim
102 words
A method of making a useful article comprising removing a portion from a quantity of anaerobically treated garbage, aerobically treated garbage, composted garbage or comminuted garbage containing cellulose and water, alkalizing said portion and then treating it with carbon disulfide to convert the cellulose to cellulose xanthate, mixing said xanthated portion with a mass of unxanthated garbage in quantities so as to produce sufficient binder for the total mass upon regeneration of the cellulose, reducing the pH of the mass to a degree sufficient to reconvert the cellulose xanthate to cellulose in situ, and drying the mass to form the useful article.
Claim 9
Independent Claim
102 words
A method of making a useful article comprising removing a portion from a quantity of anaerobically treated garbage, aerobically treated garbage, composted garbage or comminuted garbage containing cellulose and water, alkalizing said portion and then treating it with carbon disulfide to convert the cellulose to cellulose xanthate, mixing said xanthated portion with a mass of unxanthated garbage in quantities so as to produce sufficient binder for the total mass upon regeneration of the cellulose, reducing the pH of the mass to a degree sufficient to reconvert the cellulose xanthate to cellulose in situ, and drying the mass to form the useful article.
Claim 10
Dependent Claim
22 words
The method of claim 7 and further comprising the step of extruding the mass in a useful shape prior to said drying.
Claim 11
Independent Claim
87 words
A method of making a useful product comprising alkalizing a portion of solid waste garbage containing cellulose and treating said portion with carbon disulfide to convert the cellulose to cellulose xanthate, mixing said xanthated portion with a mass of unxanthated garbage in quantities so as to produce sufficient binder for the total mass upon regeneration of the cellulose and reducing the pH of the mass to a degree sufficient to reconvert the cellulose xanthate to cellulose in situ, and drying the mass to form the useful product.
Claim 12
Independent Claim
87 words
A method of making a useful product comprising alkalizing a portion of solid waste garbage containing cellulose and treating said portion with carbon disulfide to convert the cellulose to cellulose xanthate, mixing said xanthated portion with a mass of unxanthated garbage in quantities so as to produce sufficient binder for the total mass upon regeneration of the cellulose and reducing the pH of the mass to a degree sufficient to reconvert the cellulose xanthate to cellulose in situ, and drying the mass to form the useful product.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |