US4940332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent analysis apparatus
Assignee: Ajinomoto Co Inc
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Filing: 1988-08-05
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Granted: 1990-07-10
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Expires: 2008-08-05
Abstract
Abstract An apparatus for measuring the presence of microorganisms using fluorescent substances. A number of samples are measured continuously by enclosing the entire reacting and measurement sections within a thermostatically controlled enclosure. A number of samples are placed in containers with reactive liquids and placed in the reacting section of the enclosure. After the specified time within the enclosure, the container is rotated to the measuring section. The remaining liquid is filtered and activating light shined therethrough. The fluorescent light given off is measured to indicate the presence of microorganisms.
Inventors
- 👤 Harufumi Miwa
- 👤 Minoru Kashiwada
- 👤 Yoshimasa Yahagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:20
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/251; G01N21/253; C; C12; C12M; C12M41/00; C12M41/30; C12M41/36; G01N21/62; G01N21/63; G01N21/64; G01N21/6428; G01N2201/00; G01N2201/04; G01N2201/0415
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
109 words
A fluorescent analysis apparatus comprising: a thermostatically controlled enclosure; a reacting board contained within said enclosure, including a reacting section and a measuring section; a plurality of containers arranged on said reacting board for receiving samples, each container having an upper part, a lower part and a filter therebetween; and a measuring apparatus contained within the enclosure and next to the measuring section of the reacting board; wherein a reaction involving a sample may be made in the reaction section of the reacting board and then moved to the measuring section so that a measurement may be made by the measurement apparatus without removing the sample from the enclosure.
Claim 2
Dependent Claim
109 words
A fluorescent analysis apparatus comprising: a thermostatically controlled enclosure; a reacting board contained within said enclosure, including a reacting section and a measuring section; a plurality of containers arranged on said reacting board for receiving samples, each container having an upper part, a lower part and a filter therebetween; and a measuring apparatus contained within the enclosure and next to the measuring section of the reacting board; wherein a reaction involving a sample may be made in the reaction section of the reacting board and then moved to the measuring section so that a measurement may be made by the measurement apparatus without removing the sample from the enclosure.
Claim 3
Dependent Claim
21 words
The apparatus according to claim 1, wherein the containers are arranged around the periphery of a circle within the reacting board.
Claim 4
Dependent Claim
28 words
The apparatus according to claim 1, wherein a liquid is pulled from the upper container to the lower container through the filter by means of a negative pressure.
Claim 5
Dependent Claim
16 words
The apparatus according to claim 3, wherein the negative pressure is provided from a central location.
Claim 6
Dependent Claim
20 words
The apparatus according to claim 1, wherein air is bubbled to the upper part of each container during the reaction.
Claim 7
Dependent Claim
15 words
The apparatus according to claim 5, wherein the air is provided from a central location.
Claim 8
Dependent Claim
30 words
The apparatus according to claim 1, further comprising a motor drive for rotating the reacting board so as to move the containers from the reacting section to the measuring section.
Claim 9
Dependent Claim
24 words
The apparatus according to claim 1, wherein the measuring apparatus comprises a light source and filter for providing activating light of a specific wavelength.
Claim 10
Dependent Claim
28 words
The apparatus according to claim 7, wherein the measuring apparatus further comprises a filter which receives light from the sample and passes only light of a predetermined wavelength.
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) | 1993-07-09 | 1994-01-08 | 1994-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-09 | 1998-01-08 | 1998-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-09 | 2002-01-08 | 2002-07-10 | $7700.00 | Window Closed / Lapsed |