US4483928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microcapsules sensitized with antibody and a method for measurement of lymphocyte using the same based on cell-mediated immunity
Assignee: Fujifilm Holdings Corp
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Filing: 1982-09-07
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Granted: 1984-11-20
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Expires: 2002-09-07
Abstract
Abstract Microcapsules are sensitized with antibody to antigen of lymphocyte. Using such microcapsules, B cells and/or T cells can be selectively measured separately or simultaneously, in a simple manner, based on cell-mediated immunity which comprises applying the microcapsules sensitized with antibody to antigen of lymphocyte and sheep red cells or another kind of antibody-sensitized microcapsules that are optically distinguishable from the first antibody-sensitized microcapsules, to lymphocyte at the same time and thereafter independently measuring respective cells that are optically distinguishable from each other. The operation for the measurement is extremely simple and neither skill nor special equipment is required.
Inventors
- 👤 Tatsuo Suzuta
- 👤 Nobuo Hiratsuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:52
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/543; G01N33/54313; G01N33/5432; G01N33/569; G01N33/56966; G01N33/56972; Y; Y10; Y10S; Y10S436/00; Y10S436/829
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
41 words
A method for measuring cells based on cell-mediated immunity which comprises applying a microcapsule sensitized with antibody to antigen of lymphocyte and sheep red cells to lymphocyte at the same time and then independently measuring the distinguishable cells from each other.
Claim 2
Independent Claim
41 words
A method for measuring cells based on cell-mediated immunity which comprises applying a microcapsule sensitized with antibody to antigen of lymphocyte and sheep red cells to lymphocyte at the same time and then independently measuring the distinguishable cells from each other.
Claim 3
Dependent Claim
24 words
The method as claimed in claim 1 wherein said antibody is selected from the group consisting of anti-IgG antibody, anti-IgM antibody and anti-IgA antibody.
Claim 4
Dependent Claim
16 words
The method as claimed in claim 1 wherein said cells are T cells and B cells.
Claim 5
Independent Claim
27 words
The method as claimed in any of claims 1 to 3 wherein a rosette formation technique is utilized for the measurement of T cells and B cells.
Claim 6
Independent Claim
52 words
A method for measuring cells based on cell-mediated immunity which comprises applying at least two kinds of microcapsules sensitized with at least two kinds of antibodies to antigens of lymphocytes that are optically distinguishable from each other to lymphocytes at the same time, and thereafter independently measuring cells that are optically distinguishable.
Claim 7
Independent Claim
52 words
A method for measuring cells based on cell-mediated immunity which comprises applying at least two kinds of microcapsules sensitized with at least two kinds of antibodies to antigens of lymphocytes that are optically distinguishable from each other to lymphocytes at the same time, and thereafter independently measuring cells that are optically distinguishable.
Claim 8
Dependent Claim
48 words
The method as claimed in claim 5 wherein one of said antibodies is selected from the group consisting of anti-IgG antibody, anti-IgM antibody and anti-IgA antibody and another is selected from the group consisting of anti-T antibody, antibody to brain common antigen and antibody to thymus common antigen.
Claim 9
Dependent Claim
61 words
The method as claimed in claim 6 wherein B cells are determined using the microcapsules sensitized with antibody selected from the group consisting of anti-IgG antibody, anti-IgM antibody and anti-IgA antibody and, T cells are determined using the microcapsules sensitized with antibody selected from the group consisting of anti-T antibody, antibody to brain common antigen and antibody to thymus common antigen.
Claim 10
Independent Claim
23 words
The method as claimed in any of claims 5 to 7 wherein a rosette formation technique is utilized for the measurement of lymphocyte.
References Cited (Backward Citations)
US4267234A
Cited
US4342739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-20 | 1988-05-21 | 1988-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-20 | 1992-05-21 | 1992-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-20 | 1996-05-21 | 1996-11-20 | $7700.00 | Window Closed / Lapsed |