US2753166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionating apparatus
Assignee: Universal Oil Products Co
•
Filing: 1953-12-01
•
Granted: 1956-07-03
•
Expires: 1973-12-01
Abstract
No abstract record available.
Inventors
- 👤 Donald J Bergman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:08
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/18; B01D3/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A BUBBLE CAP HAVING A PLURALITY OF VERTICALLY EXTENDING TOOTHED MEMBERS OF L-SHAPED CROSS-SECTION ARRANGED TO DEFINE VERTICALLY ELONGATED PASSAGEWAYS BETWEEN ADJACENT MEMBERS, EACH OF SAID MEMBERS HAVING A LEG BENT AT RIGHT ANGLES TO SAID MEMBER AND EXTENDING TOWARD THE ADJACENT MEMBER, SAID LEGS RESTRICTING SAID PASSAGEWAYS AT THE ENTRANCE THERETO.
Claim 2
Dependent Claim
52 words
A BUBBLE CAP HAVING A PLURALITY OF VERTICALLY EXTENDING TOOTHED MEMBERS OF L-SHAPED CROSS-SECTION ARRANGED TO DEFINE VERTICALLY ELONGATED PASSAGEWAYS BETWEEN ADJACENT MEMBERS, EACH OF SAID MEMBERS HAVING A LEG BENT AT RIGHT ANGLES TO SAID MEMBER AND EXTENDING TOWARD THE ADJACENT MEMBER, SAID LEGS RESTRICTING SAID PASSAGEWAYS AT THE ENTRANCE THERETO.
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) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |