US4592994A
Expired / Lapsed
US
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Method for the determination of biochemical data
Assignee: Alfa Laval AB
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Filing: 1982-05-28
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Granted: 1986-06-03
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Expires: 2002-05-28
Abstract
Abstract Microorganisms and unicellular organisms in a sample are identified or determined by exposing the sample to an adsorbent having a specific binding power for the entity to be determined to bind the entity to the adsorbent, separating unbound sample, exposing the adsorbent containing the entity to a nutrient medium to initiate metabolism with resulting change in the physical or chemical characteristics of the substrate and observing these changes.
Inventors
- 👤 Bo G. Mattiasson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:42
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/569; G01N33/56911; C; C12; C12Q; C12Q1/00; C12Q1/02; C12Q1/025; C12Q1/04; C12Q1/06; C12Q1/18; Y; Y10; Y10S; Y10S436/00; Y10S436/807; Y10S436/81; Y10S436/827
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
100 words
A method for the identification or determination of an entity selected from the group consisting of microorganisms and unicellular organisms in a sample which comprises: (a) exposing the sample to an adsorbent having a specific binding power for said entity to bind said entity to said adsorbent; (b) separating unbound sample from the adsorbent; (c) exposing the adsorbent with bound entity to a nutrient-containing substrate to initiate metabolism of the entity, thereby causing the substrate to change its chemical or physical characteristics; and (d) observing the changes of chemical or physical characteristics of the substrate caused by the metabolic process.
Claim 2
Independent Claim
100 words
A method for the identification or determination of an entity selected from the group consisting of microorganisms and unicellular organisms in a sample which comprises: (a) exposing the sample to an adsorbent having a specific binding power for said entity to bind said entity to said adsorbent; (b) separating unbound sample from the adsorbent; (c) exposing the adsorbent with bound entity to a nutrient-containing substrate to initiate metabolism of the entity, thereby causing the substrate to change its chemical or physical characteristics; and (d) observing the changes of chemical or physical characteristics of the substrate caused by the metabolic process.
Claim 3
Dependent Claim
11 words
The method of claim 1, wherein the adsorbent contains immobilized lectins.
Claim 4
Dependent Claim
11 words
The method of claim 1, wherein the adsorbent contains immobilized antibodies.
Claim 5
Dependent Claim
21 words
The method of claim 1, wherein the changes in the pH of the substrate resulting from the metabolic process are observed.
Claim 6
Dependent Claim
19 words
The method of claim 1, wherein the oxygen consumption in the substrate resulting from the metabolic process is observed.
Claim 7
Dependent Claim
19 words
The method of claim 1, wherein a redox reaction in the substrate resulting from the metabolic process is observed.
Claim 8
Dependent Claim
21 words
The method of claim 1, whereby the production of CO 2 in the substrate resulting from the metabolic process is observed.
Claim 9
Dependent Claim
19 words
The method of claim 1, whereby the electrical conductivity of the substrate resulting from the metabolic process is observed.
Claim 10
Independent Claim
86 words
A method for the identification or determination of a substance in a sample which comprises adding to the sample an entity selected from the group consisting of microorganisms and unicellular organisms whose metabolism is influence by said substance, said entity being bound to an adsorbent having a specific binding power for said entity, bringing the sample with the added entity into contact with a nutrient-containing substrate to initiate metabolism of said entity, thereby to cause chemical or physical changes in the substrate, and observing said changes.
Claim 11
Independent Claim
86 words
A method for the identification or determination of a substance in a sample which comprises adding to the sample an entity selected from the group consisting of microorganisms and unicellular organisms whose metabolism is influence by said substance, said entity being bound to an adsorbent having a specific binding power for said entity, bringing the sample with the added entity into contact with a nutrient-containing substrate to initiate metabolism of said entity, thereby to cause chemical or physical changes in the substrate, and observing said changes.
Claim 12
Dependent Claim
17 words
The method of claim 9, characterized in that a pH change, caused by the metabolism, is determined.
Claim 13
Dependent Claim
17 words
A method claim in claim 9, characterized in that oxygen consumption, caused by the metabolism, is determined.
Claim 14
Dependent Claim
22 words
The method of claim 9, characterized in that redox status is determined for the reduction equivalents that are produced by the metabolism.
Claim 15
Dependent Claim
16 words
The method of claim 9, characterized in that CO 2 produced by the metabolism is determined.
Claim 16
Dependent Claim
19 words
The method of claim 9, characterized in that a change in electrical conductivity, caused by the metabolism, is determined.
Claim 17
Independent Claim
106 words
A method for the identification or determination of an entity selected from the group consisting of microorganisms and unicellular organisms in a sample which comprises: (a) introducing the sample into a vessel containing an adsorbent with a specific binding power for said entity, to bind said entity to said adsorbent; (b) removing unbound sample from said vessel; (c) introducing a fluid nutrient medium into said vessel; (d) maintaining said nutrient medium in contact with said adsorbent and the entity bound thereto to initiate metabolism of said entity; (e) removing the nutrient medium from the vessel and observing the effects of said metabolism on said removed medium.
Claim 18
Independent Claim
106 words
A method for the identification or determination of an entity selected from the group consisting of microorganisms and unicellular organisms in a sample which comprises: (a) introducing the sample into a vessel containing an adsorbent with a specific binding power for said entity, to bind said entity to said adsorbent; (b) removing unbound sample from said vessel; (c) introducing a fluid nutrient medium into said vessel; (d) maintaining said nutrient medium in contact with said adsorbent and the entity bound thereto to initiate metabolism of said entity; (e) removing the nutrient medium from the vessel and observing the effects of said metabolism on said removed medium.
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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) | 1989-06-02 | 1989-12-02 | 1990-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-02 | 1993-12-02 | 1994-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-02 | 1997-12-02 | 1998-06-03 | $7700.00 | Window Closed / Lapsed |