US2597927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber hydrochloride air filter
Assignee: Wingfoot Corp
•
Filing: 1950-03-29
•
Granted: 1952-05-27
•
Expires: 1970-03-29
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Endres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:43
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10; B01D39/00; B01D39/14; B01D39/16; D; D06; D06M; D06M17/00; F; F24; F24F; F24F13/00; F24F13/28; Y; Y10; Y10S; Y10S55/00; Y10S55/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A GAS FILTER REMOVING SUSPENDED PARTICELS OF MATTER FROM A GAS, WHICH FILTER COMPRISES RUBBER HYDROCHLORIDE ELEMENTS ARRANGED TO FORM A GAS PERVIOUS MAT OF SUFFICIENT THICKNESS TO PERMIT MULTIPLE CONTACT WITH THE RUBBER HYDROCHLORIDE ELEMENTS OF THE PARTICLES OF MATTER CARRIER BY THE GAS.
Claim 2
Dependent Claim
45 words
A GAS FILTER REMOVING SUSPENDED PARTICELS OF MATTER FROM A GAS, WHICH FILTER COMPRISES RUBBER HYDROCHLORIDE ELEMENTS ARRANGED TO FORM A GAS PERVIOUS MAT OF SUFFICIENT THICKNESS TO PERMIT MULTIPLE CONTACT WITH THE RUBBER HYDROCHLORIDE ELEMENTS OF THE PARTICLES OF MATTER CARRIER BY THE GAS.
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) | 1955-05-27 | 1955-11-26 | 1956-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-27 | 1959-11-26 | 1960-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-27 | 1963-11-26 | 1964-05-27 | $7700.00 | Window Closed / Lapsed |