US2833721A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant for recycle gas compressor employed in hydroforming systems
Assignee: American Oil Co
•
Filing: 1955-05-09
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Granted: 1958-05-06
•
Expires: 1975-05-09
Abstract
No abstract record available.
Inventors
- 👤 William P Hilliker
- 👤 Harry K Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:40
CPC Classifications
C; C10; C10M; C10M169/00; C10M169/04; C10M169/045; C10M107/00; C10M107/02; C10M107/08; C10M129/00; C10M129/02; C10M129/26; C10M129/28; C10M129/38; C10M129/40; C10M159/00; C10M159/02; C10M159/08; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/0265; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/126; C10M2207/129; C10M2207/40; C10M2207/402; C10M2207/404; C10N; C10N2040/00; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN A NAPHTHA HYDROFORMING SYSTEM WHEREIN A LUBRICATED GAS COMPRESSOR RECYCLES A HYDROGEN GAS STREAM TO A HYDROFORMING REACTOR CONTAINING A PLATINUM-ON-ALUMINA CATALYST, SAID CATALYST GRADUALLY HAVING CARBONACEOUS DEPOSITS FORMED THEREON DURING THE HYDROFORMING OF THE NAPHTHA, THE IMPROVEMENT WHEREBY THE FORMATION OF CARBONACEOUS DEPOSITS ON THE CATALYST DUE TO COKING THEREON OF COMPRESSOR LUBRICANT CARRIED OFF BY THE RECYCLE HYDROGEN GAS IS REDUCED WHICH IMPROVEMENT COMPRISES LUBRICATING SAID COMPRESSOR WITH A LUBRICANT CONSISTING OF A MIXTURE OF BUTYLENE POLYMERS RANGING IN VISCOSITY FROM ABOUT 100 SECONDS SAYBOLT AT 100*F. TO 1000 SECONDS SAYBOLT AT 210*F. WHICH MIXTURE HAS A VISCOSITY IN THE RANGE OF ABOUT 50 TO 90 SECONDS SAYBOLT AT 210*F. AND A SMALL AMOUNT NOT SUBSTANTIALLY EXCEEDING ABOUT 1 PERCENT BY WEIGHT OF A FATTY MATERIAL WHICH SERVES AS A LUBRICITY OILINESS AGENT.
Claim 2
Dependent Claim
136 words
IN A NAPHTHA HYDROFORMING SYSTEM WHEREIN A LUBRICATED GAS COMPRESSOR RECYCLES A HYDROGEN GAS STREAM TO A HYDROFORMING REACTOR CONTAINING A PLATINUM-ON-ALUMINA CATALYST, SAID CATALYST GRADUALLY HAVING CARBONACEOUS DEPOSITS FORMED THEREON DURING THE HYDROFORMING OF THE NAPHTHA, THE IMPROVEMENT WHEREBY THE FORMATION OF CARBONACEOUS DEPOSITS ON THE CATALYST DUE TO COKING THEREON OF COMPRESSOR LUBRICANT CARRIED OFF BY THE RECYCLE HYDROGEN GAS IS REDUCED WHICH IMPROVEMENT COMPRISES LUBRICATING SAID COMPRESSOR WITH A LUBRICANT CONSISTING OF A MIXTURE OF BUTYLENE POLYMERS RANGING IN VISCOSITY FROM ABOUT 100 SECONDS SAYBOLT AT 100*F. TO 1000 SECONDS SAYBOLT AT 210*F. WHICH MIXTURE HAS A VISCOSITY IN THE RANGE OF ABOUT 50 TO 90 SECONDS SAYBOLT AT 210*F. AND A SMALL AMOUNT NOT SUBSTANTIALLY EXCEEDING ABOUT 1 PERCENT BY WEIGHT OF A FATTY MATERIAL WHICH SERVES AS A LUBRICITY OILINESS AGENT.
References Cited (Backward Citations)
US627278A
Cited
US1869779A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |