US3603454A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container for substance incorporating volatiles
Assignee: Pfizer Inc
•
Filing: 1969-09-05
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Granted: 1971-09-07
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Expires: 1989-09-05
Abstract
Abstract A container for a substance, which must retain a necessary concentration of volatile constituents throughout storage and its useful life, includes a main container permeable to the volatiles and a depot element of a sealing material containing the volatile substance and which provides a sustained slow release thereof. This depot element, particularly intended for thin-walled plastic bottles permeable to volatiles, is shown in the following forms:
Inventors
- 👤 Helmut W Raaf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:17
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/24; B65D25/00; B65D25/02; Y; Y10; Y10S; Y10S206/00; Y10S206/828
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
165 words
A container for retaining a substance maintaining a necessary amount of volatile constituent throughout storage and useful life comprising a main container for said substance, said main container being permeable to said volatile constituent whereby said substance becomes depleted of said volatile constituent, a depot element for sustained slow release of said volatile constituent, said depot element being relatively small relative to said main container and being inserted therewithin, said depot element comprising a combination of said volatile constituent with a sealing material, said sealing material being capable of substantially retaining said volatile constituent stored therewithin but permitting a slow release thereof whereby said necessary amount of volatile constituent is retained within said container over a substantial period of storage or use, said depot element comprising a hollow container of said sealing material, said volatile constituent being disposed within said hollow container, said main container including a dip tube, said depot element comprising an elongated hollow cylinder, and said hollow cylinder comprising said dip tube.
Claim 2
Dependent Claim
165 words
A container for retaining a substance maintaining a necessary amount of volatile constituent throughout storage and useful life comprising a main container for said substance, said main container being permeable to said volatile constituent whereby said substance becomes depleted of said volatile constituent, a depot element for sustained slow release of said volatile constituent, said depot element being relatively small relative to said main container and being inserted therewithin, said depot element comprising a combination of said volatile constituent with a sealing material, said sealing material being capable of substantially retaining said volatile constituent stored therewithin but permitting a slow release thereof whereby said necessary amount of volatile constituent is retained within said container over a substantial period of storage or use, said depot element comprising a hollow container of said sealing material, said volatile constituent being disposed within said hollow container, said main container including a dip tube, said depot element comprising an elongated hollow cylinder, and said hollow cylinder comprising said dip tube.
Claim 3
Dependent Claim
174 words
A container for retaining a substance maintaining a necessary amount of volatile constituent throughout storage and useful life comprising a main container for said substance, said main container being permeable to said volatile constituent whereby said substance becomes depleted of said volatile constituent, a depot element for sustained slow release of said volatile constituent, said depot element being relatively small relative to said main container and being inserted therewithin, said depot element comprising a combination of said volatile constituent with a sealing material, said sealing material being capable of substantially retaining said volatile constituent stored therewithin but permitting a slow release thereof whereby said necessary amount of volatile constituent is retained within said container over a substantial period of storage or use, a retaining element being disposed within said main container, said depot element being affixed upon said retaining element, said retaining element comprising a knobbed shaft, said depot element including an aperture slightly smaller than said knob in the relaxed condition of said depot element, and said knob being inserted within said aperture.
Claim 4
Dependent Claim
174 words
A container for retaining a substance maintaining a necessary amount of volatile constituent throughout storage and useful life comprising a main container for said substance, said main container being permeable to said volatile constituent whereby said substance becomes depleted of said volatile constituent, a depot element for sustained slow release of said volatile constituent, said depot element being relatively small relative to said main container and being inserted therewithin, said depot element comprising a combination of said volatile constituent with a sealing material, said sealing material being capable of substantially retaining said volatile constituent stored therewithin but permitting a slow release thereof whereby said necessary amount of volatile constituent is retained within said container over a substantial period of storage or use, a retaining element being disposed within said main container, said depot element being affixed upon said retaining element, said retaining element comprising a knobbed shaft, said depot element including an aperture slightly smaller than said knob in the relaxed condition of said depot element, and said knob being inserted within said aperture.
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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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |