US3864094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel composition
Assignee: Cryogenic Recycling International Inc
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Filing: 1973-04-16
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Granted: 1975-02-04
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Expires: 1993-04-16
Abstract
Abstract An improved combustible fuel product for use in coal-burning heating systems, which fuel has a heat value substantially equivalent to that of coal and exhibits low pollution emissions. The fuel consists essentially of lignite (or brown coal) and cryogenically reclaimed rubber tire fragments. In the preferred range, the fuel consists in weight percent of between 85% and 92% lignite and between 8% and 15% cryogenically reclaimed tire fragments.
Inventors
- 👤 Harry B Locketz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:21
CPC Classifications
C; C10; C10L; C10L5/00; C10L5/40; Y; Y02; Y02E; Y02E50/00; Y02E50/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A fuel as in claim 1 which consists essentially, in weight percent, of: between about 85% and 92% lignite and 8% and 15% cryogenically reclaimed rubber tire fragments.
Claim 2
Dependent Claim
20 words
A fuel as in claim 1 wherein said cryogenically reclaimed fragments is present in an amount approximately equal to 10%.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |