US2970042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vessel with replaceable pliable lining
Assignee: Shell USA Inc
•
Filing: 1957-02-27
•
Granted: 1961-01-31
•
Expires: 1977-02-27
Abstract
No abstract record available.
Inventors
- 👤 Anton A F Lagerwey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:47
CPC Classifications
B; B65; B65D; B65D25/00; B65D25/14; Y; Y10; Y10S; Y10S165/00; Y10S165/907; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805; Y10T29/49806; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/49872
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A LINED VESSEL INCLUDING AN OUTER, IMPERVIOUS CONFINING WALL DEFINING A HOLLOW VESSEL, A SUPPORTING LAYER OF POROUS MATERIAL ON THE INNER SURFACE OF SAID WALL, AN IMPERVIOUS LINING FORMED AS A HOLLOW BODY LYING AGAINST SAID SUPPORTING LAYER, SAID POROUS MATERIAL BEING COHESIVE, ESSENTIALLY RIGID AND PRESSURE-RESISTANT, AND HAVING AN INNER SURFACE ADJOINING SAID LINING WHICH IS SUBSTANTIALLY CONTINUOUS SAVE FOR SMALL PORE OPENINGS HAVING DIAMETERS BETWEEN 5 AND 1000 MICRONS, SAID PORES BEING IN COMMUNICATION WITH ONE ANOTHER WITHIN SAID LAYER, AND MEANS FOR MAINTAINING THE PRESSURE WITHIN SAID PORES
Claim 2
Dependent Claim
92 words
A LINED VESSEL INCLUDING AN OUTER, IMPERVIOUS CONFINING WALL DEFINING A HOLLOW VESSEL, A SUPPORTING LAYER OF POROUS MATERIAL ON THE INNER SURFACE OF SAID WALL, AN IMPERVIOUS LINING FORMED AS A HOLLOW BODY LYING AGAINST SAID SUPPORTING LAYER, SAID POROUS MATERIAL BEING COHESIVE, ESSENTIALLY RIGID AND PRESSURE-RESISTANT, AND HAVING AN INNER SURFACE ADJOINING SAID LINING WHICH IS SUBSTANTIALLY CONTINUOUS SAVE FOR SMALL PORE OPENINGS HAVING DIAMETERS BETWEEN 5 AND 1000 MICRONS, SAID PORES BEING IN COMMUNICATION WITH ONE ANOTHER WITHIN SAID LAYER, AND MEANS FOR MAINTAINING THE PRESSURE WITHIN SAID PORES
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |