US3311115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low density aerosol filter
Assignee: Georgia Pacific Nonwovens LLC
•
Filing: 1963-10-29
•
Granted: 1967-03-28
•
Expires: 1983-10-29
Abstract
No abstract record available.
Inventors
- 👤 Mueller William Anton
- 👤 Maskey Donald Frederick
- 👤 Ferguson George Nathan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:12
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/06; A24D3/08; A24D3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
AN ISOTROPIC, POROUS CELLULAR FOAMED FIBROUS STRUCTURE, USEFUL IN THE FILTRATION OF AEROSOL SUSPENSIONS, WHICH IS COMPOSED OF AT LEAST A SUBSTANTIAL PROPORTION OF FIBRILLATED CELLULOSIC FIBERS BOUND TOGETHER BY ABOUT 1.0% TO ABOUT 20.0%, BASED ON THE WEIGHT OF FIBERS IN SAID ISOTROPIC CELLULAR FIBROUS STRUCTURE, OF AT LEAST ONE COAGULATED, ELASTOMERIC, HYDROPHOBIC LATEX, SAID ISOTROPIC, CELLULAR FIBROUS STRUCTURE HAVING A DENSITY OF ABOUT 5.0 POUNDS PER CUBIC FOOT TO ABOUT 8.0 POUNDS PER CUBIC FOOT.
Claim 2
Dependent Claim
77 words
AN ISOTROPIC, POROUS CELLULAR FOAMED FIBROUS STRUCTURE, USEFUL IN THE FILTRATION OF AEROSOL SUSPENSIONS, WHICH IS COMPOSED OF AT LEAST A SUBSTANTIAL PROPORTION OF FIBRILLATED CELLULOSIC FIBERS BOUND TOGETHER BY ABOUT 1.0% TO ABOUT 20.0%, BASED ON THE WEIGHT OF FIBERS IN SAID ISOTROPIC CELLULAR FIBROUS STRUCTURE, OF AT LEAST ONE COAGULATED, ELASTOMERIC, HYDROPHOBIC LATEX, SAID ISOTROPIC, CELLULAR FIBROUS STRUCTURE HAVING A DENSITY OF ABOUT 5.0 POUNDS PER CUBIC FOOT TO ABOUT 8.0 POUNDS PER CUBIC FOOT.
References Cited (Backward Citations)
US2751627A
Cited
GB741429A
Cited
US2999503A
Cited
US2860377A
Cited
US3006346A
Cited
GB908185A
Cited
US3032445A
Cited
US3081579A
Cited
US3201505A
Cited
US3193446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |