US3785561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the emission of volatile products
Assignee: Individual
•
Filing: 1972-01-27
•
Granted: 1974-01-15
•
Expires: 1992-01-27
Abstract
Abstract A device for diffusing an active substance such as a odorant or insecticide into the atmosphere at a substantially uniform rate. The device comprises a block impregnated with the substance. The block consists of a plurality of slabs, for example, of a gelatine or cellulose derivative, suitably held together.
Inventors
- 👤 M Confino
- 👤 G Godard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:43
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/18
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
17 words
A vapor diffusing device according to claim 1 wherein some of said slabs are thicker than others.
Claim 2
Dependent Claim
15 words
A vapor diffusing device according to claim 1 wherein said slabs are of equal thickness.
Claim 3
Dependent Claim
27 words
A vapor diffusing device according to claim 1 wherein less than all of said slabs are initially impregnated with said non-volatile porous material and said volatile impregnant.
Claim 4
Dependent Claim
24 words
A vapor diffusing device according to claim 1 wherein all of said slabs are impregnated with said non-volatile porous material and said volatile material.
Claim 5
Dependent Claim
19 words
A vapor diffusing device according to claim 1, in which said impregnated material comprises a material having large pores.
Claim 6
Dependent Claim
16 words
A vapor diffusing device according to claim 6, in which said impregnated material comprises agglomerated fibers.
Claim 7
Dependent Claim
17 words
A vapor diffusing device according to claim 6, in which said impregnated material comprises a cellulose derivative.
Claim 8
Dependent Claim
17 words
A vapor diffusing device according to claim 6, in which said impregnated material comprises a synthetic resin.
Claim 9
Dependent Claim
16 words
A vapor diffusing device according to claim 6, in which said impregnant comprises a deodorant. 1
Claim 10
Dependent Claim
15 words
A vapor diffusing device according to claim 6, in which said impregnant comprises an ordorant.
Claim 11
Dependent Claim
15 words
A vapor diffusing device according to claim 6, in which said impregnant comprises an insecticide.
Claim 12
Dependent Claim
15 words
A vapor diffusing device according to claim 6, in which said impregnant comprises an insectifuge.
Claim 13
Dependent Claim
138 words
A vapor diffusing device comprising, means for treating air at a substantially uniform rate of treatment comprising a plurality or air-treating slabs having a constant size throughout use of the device and disposed in stacked relationship for treating the air with a volatile substance diffused at a substantially uniform rate, each of said slabs having a major surface and said slabs being disposed with maJor surfaces opposed and in direct contact, means holding said slabs assembled in a stack and exposed to the atmosphere in use, said stack having a thickness a between the outermost major faces of the stacked slabs, each slab having a thickness a/n in which n is the total number of slabs in said stack, each slab comprising an impregnated non-volatile porous material and a volatile impregnant in said slabs for treating the air.
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |