US4052983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nasal filter
Assignee: Individual
•
Filing: 1976-11-22
•
Granted: 1977-10-11
•
Expires: 1996-11-22
Abstract
Abstract A replacable, sectionalized filter cartridge is received within a casing which is adapted to be inserted and removed from the nasal passage. The filter cartridge is preferably formed with two filter sections, one a nylon, cilia-like membrane, and one a polypropylene cilia-like membrane. If desired, in an alternate embodiment, a third honeycomb section separating the outer sections may be provided. The materials which form the outer filter sections are so chosen as to become electrostatically charged responsive to the movement of air thereby.
Inventors
- 👤 Coy R. Bovender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:16
CPC Classifications
A; A62; A62B; A62B23/00; A62B23/06; Y; Y10; Y10S; Y10S55/00; Y10S55/35
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
125 words
A filter device for insertion into the nasal passage comprising: a. a hollow casing formed of a soft pliable material and having an outer transverse dimension shaped substantially to conform to the contour of the inner wall of the nasal passage and an inner transverse dimension; b. a removable and disposable filter cartridge means carried within said casing and comprising: i. a housing having outer transverse dimensions closely corresponding to the inner transverse dimensions of said casing for removable, yet stationary support within said casing; ii. at least one filter section formed of a porous membrane extending transversely across said housing; iii. a multiplicity of minute artificial fibers depending from said membrane, whereby said filter cartridge means simulates the natural cilia of the mucous membrane.
Claim 2
Dependent Claim
125 words
A filter device for insertion into the nasal passage comprising: a. a hollow casing formed of a soft pliable material and having an outer transverse dimension shaped substantially to conform to the contour of the inner wall of the nasal passage and an inner transverse dimension; b. a removable and disposable filter cartridge means carried within said casing and comprising: i. a housing having outer transverse dimensions closely corresponding to the inner transverse dimensions of said casing for removable, yet stationary support within said casing; ii. at least one filter section formed of a porous membrane extending transversely across said housing; iii. a multiplicity of minute artificial fibers depending from said membrane, whereby said filter cartridge means simulates the natural cilia of the mucous membrane.
Claim 3
Dependent Claim
27 words
The filter device according to claim 1 wherein said artificial fibers are formed of a material which generates an electrostatic charge in the presence of moving air.
Claim 4
Dependent Claim
12 words
The filter device according to claim 2 wherein said fibers are nylon.
Claim 5
Dependent Claim
36 words
The filter device according to claim 1 wherein said filter cartridge means comprises a second, lower porous membrane spaced from the first mentioned porous membrane and having a plurality of minute artificial fibers extending upwardly therefrom.
Claim 6
Dependent Claim
39 words
The filter device according to claim 4 wherein said filter cartridge means comprises a second type of filter section adjacent said first type of filter section, said second type of filter section including filter material having a honeycomb configuration.
Claim 7
Dependent Claim
63 words
The filter device according to claim 4 wherein the artificial fibers extending from one membrane are formed of a material that generates an electrostatic charge of one polarity in the presence of moving air, and the fibers extending from the second membrane are formed of a material that generate an electrical charge, having an opposite polarity, in the presence of said moving air.
Claim 8
Dependent Claim
20 words
The filter device according to claim 1 wherein said filter section is treated with a bacteriostatic enzyme known as lysosyme.
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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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |