US2780308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for coating air filters
Assignee: ExxonMobil Oil Corp
•
Filing: 1953-12-22
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Granted: 1957-02-05
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Expires: 1973-12-22
Abstract
No abstract record available.
Inventors
- 👤 William B Mullin
- 👤 Charles E Painter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:13
CPC Classifications
B; B01; B01D; B01D46/00; B01D39/00; B01D39/14; C; C10; C10M; C10M1/00; C10M1/08; C10M2203/00; C10M2203/10; C10M2203/102; C10M2205/00; C10M2205/14; C10M2205/16; C10M2205/17; C10N; C10N2040/00; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; Y; Y10; Y10S; Y10S55/00; Y10S55/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A FILTER FOR REMOVING SUSPENDED MATERIAL FROM A GASEOUS STREAM WHICH COMPRISES: A CHAMBER PROVIDED INTERNALLY WITH A LARGE AREA OF SURFACES INTERPOSED IN THE PATH OF A GASEOUS STREAM DIRECTED THROUGH SAID CHAMBER, AND AN ADHESIVE COATING UPON SAID SURFACES CONSISTING OF 5 TO 25% OF MICROCRYSTALLINE PETROLEUM WAX HAVING A MELTING POINT OF AT LEAST ABOUT 150*F. AND AN OIL HAVING A VISCOSITY OF BETWEEN 40 AND 100 SECONDS SAYBOLT UNIVERSAL AT 210*F. AND HAVING A FLASH POINT OF AT LEAST 350*F.
Claim 2
Dependent Claim
84 words
A FILTER FOR REMOVING SUSPENDED MATERIAL FROM A GASEOUS STREAM WHICH COMPRISES: A CHAMBER PROVIDED INTERNALLY WITH A LARGE AREA OF SURFACES INTERPOSED IN THE PATH OF A GASEOUS STREAM DIRECTED THROUGH SAID CHAMBER, AND AN ADHESIVE COATING UPON SAID SURFACES CONSISTING OF 5 TO 25% OF MICROCRYSTALLINE PETROLEUM WAX HAVING A MELTING POINT OF AT LEAST ABOUT 150*F. AND AN OIL HAVING A VISCOSITY OF BETWEEN 40 AND 100 SECONDS SAYBOLT UNIVERSAL AT 210*F. AND HAVING A FLASH POINT OF AT LEAST 350*F.
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) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |