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US3073778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing odorless naphthas
Assignee: Pure Oil Co
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Filing: 1959-11-09
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Granted: 1963-01-15
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Expires: 1979-11-09
Abstract
No abstract record available.
Inventors
- 👤 George W Aycrs
- 👤 William A Krewer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:46
CPC Classifications
C; C10; C10G; C10G19/00; C10G29/00; C10G29/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
THE PROCESS OF PRODUCING ODORLESS PETROLEUM FRACTIONS WHICH COMPRISES CONTACTING A PETROLEUM FRACTION BOILING FROM ABOUT 300* TO 600* F. CHARACTERIZED BY ODOR INSTABILITY AND BEING ESSENTIALLY FREE OF AROMATIC HYDROCARBONS OF THE GROUP CONSISTING OF HEAVY ALKYLATES PREPARED BY THE ACID ALKYLATION OF OLEFINS WHICH ALKANES, FRACTIONS OF SAID HEAVY ALKYLATES AND STRAIGHT RUN NAPHTHA FRACTIONS WHICH HAVE BEEN ESSENTIALLY DENUDED OF THEIR AROMATIC CONTENT WITH A SOLUTION CONTAINING ABOUT 0.1 TO 30 PERCENT BY WEIGHT OF AN ALKALI METAL HYDROXIDE AND ABOUT 0.1 TO 25 PERCENT BY WEIGHT OF A HYDRAZINE COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDRAZINE HYDRAZINE HYDROCHLORIDE, HYDRAZINE SULFATE, ALKYLHYDRAZINES, N,N-DIALKYHDRAZINES, ALKYLHDRAZINE HYDROCHLORIDES, N,N-DIALKYHYDRAZINE HYDROCHLORIDES, ALKYLHYDRAZINE SULFATES AND N,N-DIALKYLHYDRAZINE SULFATES AND THEIR MIXTURES, WHEREIN THE ALKYL GROUPS CONTAIN FROM 1 TO 6 CARBON ATOMS, AND RECOVERING A STABLE PETROLEUM PRODUCT.
Claim 2
Dependent Claim
136 words
THE PROCESS OF PRODUCING ODORLESS PETROLEUM FRACTIONS WHICH COMPRISES CONTACTING A PETROLEUM FRACTION BOILING FROM ABOUT 300* TO 600* F. CHARACTERIZED BY ODOR INSTABILITY AND BEING ESSENTIALLY FREE OF AROMATIC HYDROCARBONS OF THE GROUP CONSISTING OF HEAVY ALKYLATES PREPARED BY THE ACID ALKYLATION OF OLEFINS WHICH ALKANES, FRACTIONS OF SAID HEAVY ALKYLATES AND STRAIGHT RUN NAPHTHA FRACTIONS WHICH HAVE BEEN ESSENTIALLY DENUDED OF THEIR AROMATIC CONTENT WITH A SOLUTION CONTAINING ABOUT 0.1 TO 30 PERCENT BY WEIGHT OF AN ALKALI METAL HYDROXIDE AND ABOUT 0.1 TO 25 PERCENT BY WEIGHT OF A HYDRAZINE COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDRAZINE HYDRAZINE HYDROCHLORIDE, HYDRAZINE SULFATE, ALKYLHYDRAZINES, N,N-DIALKYHDRAZINES, ALKYLHDRAZINE HYDROCHLORIDES, N,N-DIALKYHYDRAZINE HYDROCHLORIDES, ALKYLHYDRAZINE SULFATES AND N,N-DIALKYLHYDRAZINE SULFATES AND THEIR MIXTURES, WHEREIN THE ALKYL GROUPS CONTAIN FROM 1 TO 6 CARBON ATOMS, AND RECOVERING A STABLE PETROLEUM 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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |