US3924733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for preserving solvent-dispersed chemicals
Assignee: Individual
•
Filing: 1974-05-08
•
Granted: 1975-12-09
•
Expires: 1994-05-08
Abstract
Abstract A circular, dished container is provided with a hermetically sealed cover and is subdivided into a number of upwardly open compartments. One of these compartments is filled with a spongy mass capable of retaining a quantity of liquid solvent. The other compartments receive specimens of the chemicals to be preserved; these chemicals being held in a liquid or semi-liquid state by dispersal in the same liquid solvent. Desiccation of the chemical specimens - artists'' paints, for example - is prevented by the maintenance of a solvent-saturated or carrier-saturated atmosphere through evaporation from the enclosed sponge, once the cover is secured on the container.
Inventors
- 👤 Carol Delong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:39
CPC Classifications
B; B44; B44D; B44D3/00; B44D3/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
154 words
A palette for artists comprising: a dished base having an interior paint receiving section formed on a bottom plate, said base including an upstanding wall integRally connected to said bottom plate adjacent the periphery of said bottom plate, said bottom plate being circular, a boss attached to said bottom plate and located within said paint receiving section, said boss being centrally located upon said bottom plate; a circular shaped cover having a depending annular wall located at the periphery of said cover, an opening centrally located within said cover, a movable locking member extending through said opening, with said cover placed upon said base said upstanding wall of said base being located in a close proximity to and in an overlapping arrangement with said annular wall of said cover and said locking member being located within said boss, said locking member being movable to a locking position to secure said cover to said base.
Claim 2
Dependent Claim
154 words
A palette for artists comprising: a dished base having an interior paint receiving section formed on a bottom plate, said base including an upstanding wall integRally connected to said bottom plate adjacent the periphery of said bottom plate, said bottom plate being circular, a boss attached to said bottom plate and located within said paint receiving section, said boss being centrally located upon said bottom plate; a circular shaped cover having a depending annular wall located at the periphery of said cover, an opening centrally located within said cover, a movable locking member extending through said opening, with said cover placed upon said base said upstanding wall of said base being located in a close proximity to and in an overlapping arrangement with said annular wall of said cover and said locking member being located within said boss, said locking member being movable to a locking position to secure said cover to said base.
Claim 3
Dependent Claim
33 words
The palette as defined in claim 1 wherein: said paint receiving section being divided into a plurality of separate compartments with each said compartment being adapted to receive a separate quantity of paint.
Claim 4
Dependent Claim
39 words
The palette as defined in claim 1 wherein: said bottom plate being extended laterally out from said upstanding wall, with said cover located upon said base said annular wall being located against said extended portion of said bottom plate.
Claim 5
Dependent Claim
32 words
The palette as defined in claim 3 including: sealing means located between said depending annular wall and said extended portion of said bottom plate when said cover is positioned upon said base.
Claim 6
Dependent Claim
26 words
The palette as defined in claim 1 wherein: sealing means located between said movable locking member and said cover to provide an air tight connection therebetween.
Claim 7
Dependent Claim
19 words
The palette as defined in claim 1 including: a porous solvent retaining substance positioned within said paint receiving section.
Claim 8
Dependent Claim
27 words
The palette as defined in claim 6 wherein: said porous retaining substance being disc shaped having a central opening therethrough, said boss located within said central opening.
Claim 9
Dependent Claim
64 words
The palette as defined in claim 1 wherein: said paint receiving section being divided into a plurality of separate compartments with each said compartment being adapted to receive a separate quantity of paint, said bottom plate being extended laterally out from said upstanding wall, with said cover located upon said base said annular wall being located against said extended portion of said bottom plate.
Claim 10
Dependent Claim
32 words
The palette as defined in claim 8 wherein: sealing means located between said depending annular wall and said extended portion of said bottom plate when said cover is positioned upon said base.
Claim 11
Dependent Claim
38 words
The palette as defined in claim 9 wherein: a porous solvent retaining substance positioned within said paint receiving section, said porous retaining substance being disc shaped having a central opening therethrough, said boss located within said central opening.
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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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |