Patent US4772236A successfully refreshed from Google Patents.
Patent US4054061A successfully refreshed from Google Patents.
US4054061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graduated pipette equipped with a lateral suctions squirt
Assignee: Individual
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Filing: 1976-02-17
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Granted: 1977-10-18
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Expires: 1996-02-17
Abstract
Abstract Graduated pipette formed by a stem having an inner diameter of suitable size, while said stem is closed at the top and its lower end presents a beveled edge. The stem is equipped at a suitable height, with a lateral branch formed by a capillary tube with a rubber cap or bulb fixed thereto having a suitable configuration and size such as to delimit a bigger volume than the volume of the stem. The cap presents an inner volume sufficient to move an air mass which, with drawn liquid is enough to fill all of the stem portion below the branch.
Inventors
- 👤 Alfredo Valt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:21
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L3/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A graduated pipette including an elongated tubular member closed at one end and open at the other, a laterally and downwardly extending capillary tube integrally connected with the tubular member adjacent its closed end but spaced therefrom and in communication with the interior thereof, and a bulb mounted on said capillary tube with its interior in communication with the passageway of the capillary tube, wherein the interior volume of the bulb is greater than that of tubular member in the bulb.
Claim 2
Dependent Claim
81 words
A graduated pipette including an elongated tubular member closed at one end and open at the other, a laterally and downwardly extending capillary tube integrally connected with the tubular member adjacent its closed end but spaced therefrom and in communication with the interior thereof, and a bulb mounted on said capillary tube with its interior in communication with the passageway of the capillary tube, wherein the interior volume of the bulb is greater than that of tubular member in the bulb.
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) | 1980-10-17 | 1981-04-18 | 1981-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-17 | 1985-04-18 | 1985-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-17 | 1989-04-18 | 1989-10-18 | $7700.00 | Window Closed / Lapsed |