Patent US3304693A successfully refreshed from Google Patents.
US3304693A
Expired / Lapsed
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Dehydration process
Assignee: Phillips Petroleum Co
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Filing: 1963-12-12
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Granted: 1967-02-21
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Expires: 1983-12-12
Abstract
No abstract record available.
Inventors
- 👤 Glenn O Ebrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:06
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR DEHYDRATING A FIRST FLUID CONSISTING ESSENTIALLY OF MONOMER WHICH WILL TEND TO POLYMERIZE IF SUBJECTED TO HOT AIR REGENERATION AND WATER WHICH COMPRISES: IN A FIRST STEP PASSING A QUANTITY OF SAID FIRST FLUID THROUGH A DEHYDRATING ADSORBENT FOR A PERIOD OF TIME INSUFFICIENT TO EXHAUST THE ADSORPTIVE CAPACITY OF SAID ADSORBENT; AND IN A SECOND STEP PASSING A SECOND FLUID CONSISTING ESSENTIALLY OF A LIQUID SOLVENT FOR SAID MONOMER THROUGH SAID ADSORBENT TO FLUSH THE RESIDUAL FIRST FLUID THEREFROM;
Claim 2
Dependent Claim
83 words
A PROCESS FOR DEHYDRATING A FIRST FLUID CONSISTING ESSENTIALLY OF MONOMER WHICH WILL TEND TO POLYMERIZE IF SUBJECTED TO HOT AIR REGENERATION AND WATER WHICH COMPRISES: IN A FIRST STEP PASSING A QUANTITY OF SAID FIRST FLUID THROUGH A DEHYDRATING ADSORBENT FOR A PERIOD OF TIME INSUFFICIENT TO EXHAUST THE ADSORPTIVE CAPACITY OF SAID ADSORBENT; AND IN A SECOND STEP PASSING A SECOND FLUID CONSISTING ESSENTIALLY OF A LIQUID SOLVENT FOR SAID MONOMER THROUGH SAID ADSORBENT TO FLUSH THE RESIDUAL FIRST FLUID THEREFROM;
References Cited (Backward Citations)
US2228788A
Cited
US2412504A
Cited
US2389251A
Cited
GB843503A
Cited
US2987175A
Cited
US3080433A
Cited
US3240830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |