Patent US3901085A successfully refreshed from Google Patents.
US3901085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipette or similar apparatus for measuring determined volumes of liquid
Assignee: Individual
•
Filing: 1973-11-29
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Granted: 1975-08-26
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Expires: 1993-11-29
Abstract
Abstract A pipette or similar measuring instrument for determined volumes of liquid comprising two conduit portions connected in end-to-end sealed relation to form a composite pipe sealably engaged in a receptacle which can be selectively evacuated or pressurized. One conduit portion is wettable by the liquid and the other is nonwettable thereby.
Inventors
- 👤 Jean Marie Faure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:00
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L2200/00; B01L2200/06; B01L2200/0615; B01L2300/00; B01L2300/16; B01L2300/161; B01L2400/00; B01L2400/04; B01L2400/0475; B01L2400/0487; G; G01; G01N; G01N35/00; G01N2035/00178; G01N2035/00237
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
85 words
Apparatus for the measure of determined volumes of liquid by the overflow method, said apparatus comprising a receptacle, a conduit sealingly secured in said receptacle and including first and second conduit portions assembled in end-to-end sealed relation and having respective open ends, said first conduit portion extending into said receptacle and being constituted of a material which is wettable by the liquid to be measured, said second conduit portion extending outside said receptacle and being constituted of a material which is non-wettable by said liquid.
Claim 2
Dependent Claim
85 words
Apparatus for the measure of determined volumes of liquid by the overflow method, said apparatus comprising a receptacle, a conduit sealingly secured in said receptacle and including first and second conduit portions assembled in end-to-end sealed relation and having respective open ends, said first conduit portion extending into said receptacle and being constituted of a material which is wettable by the liquid to be measured, said second conduit portion extending outside said receptacle and being constituted of a material which is non-wettable by said liquid.
Claim 3
Dependent Claim
19 words
A conduit as claimed in claim 1 wherein said receptacle is adapted for being subjected to suction or pressure.
Claim 4
Dependent Claim
20 words
A conduit as claimed in claim 2 wherein the end-to-end connection of the conduit portions is located within said receptacle.
Claim 5
Dependent Claim
20 words
A conduit as claimed in claim 3 wherein said conduit portions are telescoped where they are connected in end-to-end relation.
Claim 6
Dependent Claim
17 words
A conduit as claimed in claim 1 wherein the material of said first conduit portioN is glass.
Claim 7
Dependent Claim
17 words
A conduit as claimed in claim 1 wherein the material of said second conduit portion is polytetrafluoroethylene.
Claim 8
Dependent Claim
18 words
A conduit as claimed in claim 1 wherein said second portion is substantially longer than the first portion.
Claim 9
Dependent Claim
28 words
Apparatus as claimed in claim 3 wherein said first conduit portion is disposed in entirety in said receptacle, said second conduit portion being sealingly secured in said receptacle.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |