US3989499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of refuse into fibrous material
Assignee: Jetzer Engineering AG
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Filing: 1973-01-26
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Granted: 1976-11-02
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Expires: 1993-01-26
Abstract
Abstract Household, agricultural, forestry, and/or commercial refuse containing a mix of organic substances which respectively decompose rapidly, less rapidly and slowly, is converted into a fibrous material by subjecting the refuse to aerobic decomposition which is interrupted after only the rapidly decomposable organic substances are decomposed, whereby a fibrous material is obtained which is thereupon dried and sterilized. A hardenable binder material may be admixed with the resultant dried fibrous material and the mixture may be shaped to desired configuration and the binder material hardened under simultaneous application of pressure to make a shaped body.
Inventors
- 👤 Raimund Jetzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:34
CPC Classifications
C; C08; C08L; C08L99/00; B; B03; B03B; B03B9/00; B03B9/06; C04; C04B; C04B18/00; C04B18/04; C04B18/30; C05; C05F; C05F9/00; C05F9/04; C08K; C08K11/00; C08L97/00; C08L97/02; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/20; Y02P; Y02P20/00; Y02P20/141; Y02P20/145; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S71/00; Y10S71/901
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
110 words
A method of producing a fibrous material from household, agricultural, forestry and/or commercial refuse containing a mix of substances which, respectively, have a more rapid decomposition rate substantially equal to that of sugar, proteins and starches, a less rapid decomposition rate substantially equal to that of cellulose, and a slower decomposition rate substantially equal to that of lignin, said method comprising the steps of subjecting said refuse to aerobic decomposition; interrupting said aerobic decomposition after substantially only the substances having said more rapid decomposition rate are decomposed so as to obtain a fibrous material; and drying said fibrous material, whereby to obtain a product having relatively straight and long fibers.
Claim 2
Independent Claim
110 words
A method of producing a fibrous material from household, agricultural, forestry and/or commercial refuse containing a mix of substances which, respectively, have a more rapid decomposition rate substantially equal to that of sugar, proteins and starches, a less rapid decomposition rate substantially equal to that of cellulose, and a slower decomposition rate substantially equal to that of lignin, said method comprising the steps of subjecting said refuse to aerobic decomposition; interrupting said aerobic decomposition after substantially only the substances having said more rapid decomposition rate are decomposed so as to obtain a fibrous material; and drying said fibrous material, whereby to obtain a product having relatively straight and long fibers.
Claim 3
Dependent Claim
15 words
A method as defined in claim 1, wherein said drying comprises sterilizing said fibrous material.
Claim 4
Dependent Claim
25 words
A method as defined in claim 1, wherein said drying comprises sterilizing said fibrous material by subjecting it to heat in excess of 100° C.
Claim 5
Dependent Claim
73 words
A fibrous material produced by subjecting refuse containing a mix of substances which, respectively, have a more rapid decomposition rate substantially equal to that of sugar, proteins and starches, a less rapid decomposition rate substantially equal to that of cellulose, and a slower decomposition rate substantially equal to that of lignin to aerobic decomposition until substantially only the substances having said more rapid decomposition rate are decomposed, and drying the resulting fibrous material.
Claim 6
Dependent Claim
73 words
A fibrous material produced by subjecting refuse containing a mix of substances which, respectively, have a more rapid decomposition rate substantially equal to that of sugar, proteins and starches, a less rapid decomposition rate substantially equal to that of cellulose, and a slower decomposition rate substantially equal to that of lignin to aerobic decomposition until substantially only the substances having said more rapid decomposition rate are decomposed, and drying the resulting fibrous material.
Claim 7
Dependent Claim
23 words
A fibrous material as defined in claim 4, wherein said refuse is from the group composed of household, agricultural, forestry and commercial refuse.
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) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |