US2569124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bleaching oils in the presence of steam
Assignee: PPG Industries Inc
•
Filing: 1950-12-22
•
Granted: 1951-09-25
•
Expires: 1970-12-22
Abstract
No abstract record available.
Inventors
- 👤 Roger M Christenson
- 👤 Ralph E Harpt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:33
CPC Classifications
C; C11; C11B; C11B3/00; C11B3/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS OF TREATING GLYCERIDE OIL CONTAINING BREAK CONSTITUENTS BUT IN AN AMOUNT NOT IN EXCESS OF .3% WHICH PROCESS COMPRISES PREHEAT-ING THE OIL TO A TEMPERATURE OF 215 TO 242* F., THEN BLOWING IT WITH LIVE STEAM AND IN THE PRESENCE OF ABOUT .2 TO 5% BY WEIGHT OF AN ADSORBENT EARTH, DRYIUNG THE OIL BY BLOWING IT WITH INERT GAS, AND REMOVING THE ADSORBENT EARTH.
Claim 2
Dependent Claim
67 words
A PROCESS OF TREATING GLYCERIDE OIL CONTAINING BREAK CONSTITUENTS BUT IN AN AMOUNT NOT IN EXCESS OF .3% WHICH PROCESS COMPRISES PREHEAT-ING THE OIL TO A TEMPERATURE OF 215 TO 242* F., THEN BLOWING IT WITH LIVE STEAM AND IN THE PRESENCE OF ABOUT .2 TO 5% BY WEIGHT OF AN ADSORBENT EARTH, DRYIUNG THE OIL BY BLOWING IT WITH INERT GAS, AND REMOVING THE ADSORBENT EARTH.
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) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |