US2629459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1950-03-27
•
Granted: 1953-02-24
•
Expires: 1970-03-27
Abstract
No abstract record available.
Inventors
- 👤 Hammond R Philip
- 👤 Joseph A Leary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:14
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/20; B01D39/2003; B01D39/2017; B01D46/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A FILTER FOR REMOVING PARTICULATE MATTER FROM A GAS STREAM SATURATED WITH VAPOR COMPRISING A PAD OF GLASS FIBERS, SAID FIBERS BEING ABOUT 0.0004 INCH IN DIAMETER AND BEING PACKED IN ESSENTIALLY RANDOM ORIENTATION TO A BULK DENSITY OF BETWEEN ABOUT 0.1 AND ABOUT 0.6 PER POUND
Claim 2
Dependent Claim
47 words
A FILTER FOR REMOVING PARTICULATE MATTER FROM A GAS STREAM SATURATED WITH VAPOR COMPRISING A PAD OF GLASS FIBERS, SAID FIBERS BEING ABOUT 0.0004 INCH IN DIAMETER AND BEING PACKED IN ESSENTIALLY RANDOM ORIENTATION TO A BULK DENSITY OF BETWEEN ABOUT 0.1 AND ABOUT 0.6 PER POUND
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Cited
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Cited
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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) | 1956-02-24 | 1956-08-25 | 1957-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-24 | 1960-08-25 | 1961-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-24 | 1964-08-25 | 1965-02-24 | $7700.00 | Window Closed / Lapsed |