US4047438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid quantitative dispensing apparatus
Assignee: Individual
•
Filing: 1976-03-31
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Granted: 1977-09-13
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Expires: 1996-03-31
Abstract
Abstract Liquid quantitative dispensing apparatus for withdrawing liquid like a syringe into a plurality of pipettes arranged in rows, by simultaneously pressing and releasing cap-like projections formed of flexible material and dispensing the liquid to test tubes and the like.
Inventors
- 👤 Teruaki Sekine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:24
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L3/021; B01L2400/00; B01L2400/04; B01L2400/0475; B01L2400/0481; G; G01; G01N; G01N35/00; G01N35/10; G01N35/1065
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
121 words
Liquid quantitative dispensing apparatus comprising a flexible board-like member having a plurality of cap-like projections arranged in rows lengthwise and crosswise thereon with a small space between each of said projections, a lower board positioned under the said flexible board-like member and having a plurality of aligned pipettes held therein which correspond in number with said projections, a guide board positioned on the said flexible board-like member and having bores to loosely receive said cap-like projections, the said guide board, flexible board-like member and said lower board forming together the main apparatus body, and a keep plate having push bars disposed thereunder so as to be inserted into the said bores of the said guide board to press said cap-like projections.
Claim 2
Dependent Claim
121 words
Liquid quantitative dispensing apparatus comprising a flexible board-like member having a plurality of cap-like projections arranged in rows lengthwise and crosswise thereon with a small space between each of said projections, a lower board positioned under the said flexible board-like member and having a plurality of aligned pipettes held therein which correspond in number with said projections, a guide board positioned on the said flexible board-like member and having bores to loosely receive said cap-like projections, the said guide board, flexible board-like member and said lower board forming together the main apparatus body, and a keep plate having push bars disposed thereunder so as to be inserted into the said bores of the said guide board to press said cap-like projections.
Claim 3
Dependent Claim
19 words
Liquid quantitative dispensing apparatus according to claim 1, wherein the said flexible board-like member is formed of rubber material.
Claim 4
Dependent Claim
21 words
Liquid quantitative dispensing apparatus according to claim 1, wherein the said flexible board-like member is formed of soft elastic synthetic resin.
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) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |