Patent US2828348A successfully refreshed from Google Patents.
US2828348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation of hydrocarbons
Assignee: MW Kellogg Co
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Filing: 1955-10-28
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Granted: 1958-03-25
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Expires: 1975-10-28
Abstract
No abstract record available.
Inventors
- 👤 Samuel R Stiles
- 👤 Warburton James
- 👤 John M Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:05
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; C07C2527/00; C07C2527/02; C07C2527/053; C07C2527/054
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN A PROCESS FOR THE ALKYLATION OF HYDROCARBONS COMPRISING ISOPARAFFINS WITH OLEFINS IN THE PRESENCE OF A SULFURIC ACID CATALYST IN WHICH THE HYDROCARBONS AND ACID CATALYST ARE CONTACTED IN A REACTION ZONE UNDE CONDITIONS INCLUDING LOW TEMPERATURE AND PRESSURE SUITABLE TO EFFECT SAID ALKYLATION REACTION AND WHEREIN THE REACTION TEMPERATURE IS MAINTAINED BY VAPORIZING A PORTION OF THE HYDROCARBONS IN SAID REACTION ZONE AND WHEREIN A WET ISOPARAFFIN STREAM IS RECYCLED TO THE REACTION ZONE, THE IMPROVEMENT WHICH COMPRISES COMBINING SAID ACID CATALYST WITH SAID WET ISOPARAFFIN STREAM PRIOR TO ADDING OLEFIN REACTANT THERETO, FLASHING SAID COMBINED STREAM TO FORM A VAPOROUS PORTION AND A LIQUID PORTION OF SAID COMBINED STREAM AND THEREAFTER PASSING SAID LIQUID PORTION IN CONTACT WITH SAID OLEFIN REACTANTS.
Claim 2
Dependent Claim
124 words
IN A PROCESS FOR THE ALKYLATION OF HYDROCARBONS COMPRISING ISOPARAFFINS WITH OLEFINS IN THE PRESENCE OF A SULFURIC ACID CATALYST IN WHICH THE HYDROCARBONS AND ACID CATALYST ARE CONTACTED IN A REACTION ZONE UNDE CONDITIONS INCLUDING LOW TEMPERATURE AND PRESSURE SUITABLE TO EFFECT SAID ALKYLATION REACTION AND WHEREIN THE REACTION TEMPERATURE IS MAINTAINED BY VAPORIZING A PORTION OF THE HYDROCARBONS IN SAID REACTION ZONE AND WHEREIN A WET ISOPARAFFIN STREAM IS RECYCLED TO THE REACTION ZONE, THE IMPROVEMENT WHICH COMPRISES COMBINING SAID ACID CATALYST WITH SAID WET ISOPARAFFIN STREAM PRIOR TO ADDING OLEFIN REACTANT THERETO, FLASHING SAID COMBINED STREAM TO FORM A VAPOROUS PORTION AND A LIQUID PORTION OF SAID COMBINED STREAM AND THEREAFTER PASSING SAID LIQUID PORTION IN CONTACT WITH SAID OLEFIN REACTANTS.
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) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |