Patent US2957808A successfully refreshed from Google Patents.
US2957808A
Expired / Lapsed
US
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Process for the isolation of diagnostic and immunizing proteinaceous materials
Assignee: California Institute Research Foundation
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Filing: 1958-11-10
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Granted: 1960-10-25
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Expires: 1978-11-10
Abstract
No abstract record available.
Inventors
- 👤 Dan H Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:26
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/531; C; C07; C07K; C07K16/00; C07K16/18; Y; Y10; Y10S; Y10S435/00; Y10S435/961; Y10S436/00; Y10S436/811
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PROCESS FOR ISOLATING ANTIBODIES SPECIFIC TO A SELECTED DIAGNOSTIC AND IMMUNIZING PROTEINACEOUS ANTIGEN COMPRISING: FORMING THE DIAZONIUM SALT OF P-AMINOBENZYLCELLULOSE, COUPLING A SELECTED DIAGNOSTIC AND IMMUNIZING PROTEINACEOUS ANTIGEN TO SAID SALT TO FORM AN INSOLUBLE PROTEIN CELLULOSE COMPOUND, COMMINGLING SAID COMPOUND WITH THE ANTIBODY SPECIFIC TO THE SELECTED ANTIGEN WHEREBY THE ANTIBODY IS ADSORBED BY SAID COMPOUND, AND DISSOCIATING SAID ANTIBODY FROM SAID COMPOUND.
Claim 2
Dependent Claim
65 words
A PROCESS FOR ISOLATING ANTIBODIES SPECIFIC TO A SELECTED DIAGNOSTIC AND IMMUNIZING PROTEINACEOUS ANTIGEN COMPRISING: FORMING THE DIAZONIUM SALT OF P-AMINOBENZYLCELLULOSE, COUPLING A SELECTED DIAGNOSTIC AND IMMUNIZING PROTEINACEOUS ANTIGEN TO SAID SALT TO FORM AN INSOLUBLE PROTEIN CELLULOSE COMPOUND, COMMINGLING SAID COMPOUND WITH THE ANTIBODY SPECIFIC TO THE SELECTED ANTIGEN WHEREBY THE ANTIBODY IS ADSORBED BY SAID COMPOUND, AND DISSOCIATING SAID ANTIBODY FROM SAID COMPOUND.
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) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |