Patent US3226213A successfully refreshed from Google Patents.
US3226213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel gas composition
Assignee: Dow Chemical Co
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Filing: 1962-11-23
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Granted: 1965-12-28
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Expires: 1982-11-23
Abstract
No abstract record available.
Inventors
- 👤 Rodney A Nelson
- 👤 Jr Robert W Belfit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:32
CPC Classifications
C; C10; C10L; C10L3/00; C10L3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A COMPOSITION OF MATTER CONSISTING EXXENTIALLY OF A MIXTURE OF FROM ABOUT 48 TO ABOUT 75 MOLE PERCENT OF A FIRST COMPONENT SELECTED FROM THE GROUP CONSISTING OF METHYLACETYLENE, PROPADIENE AND MIXTRUES THEREOF, FROM ABOUT 11 TO ABOUT 38 MOLE PERCENT OF A SECOND COMPONENT SELECTED FROM THE GROUP CONSISTING OF PROPANE, PROPYLENE AND MIXTURES THEREOF, AND FROM ABOUT 2 TO ABOUT 14 MOLE PERCENT OF A THIRD COMPONENT SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF SATURATED AND ETHYLENICALLY UNSATURATED HYDROCARBONS CONTAINING FOUR CARBON ATOMS.
Claim 2
Dependent Claim
89 words
A COMPOSITION OF MATTER CONSISTING EXXENTIALLY OF A MIXTURE OF FROM ABOUT 48 TO ABOUT 75 MOLE PERCENT OF A FIRST COMPONENT SELECTED FROM THE GROUP CONSISTING OF METHYLACETYLENE, PROPADIENE AND MIXTRUES THEREOF, FROM ABOUT 11 TO ABOUT 38 MOLE PERCENT OF A SECOND COMPONENT SELECTED FROM THE GROUP CONSISTING OF PROPANE, PROPYLENE AND MIXTURES THEREOF, AND FROM ABOUT 2 TO ABOUT 14 MOLE PERCENT OF A THIRD COMPONENT SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF SATURATED AND ETHYLENICALLY UNSATURATED HYDROCARBONS CONTAINING FOUR CARBON ATOMS.
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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |