US3663684A
Expired / Lapsed
US
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Carcinoembryonic antigen and diagnostic method using radioactive iodine
Assignee: F Hoffmann La Roche AG
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Filing: 1970-06-01
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Granted: 1972-05-16
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Expires: 1990-06-01
Abstract
Abstract METHODS FOR IOSLATING, IDENTIFYING AND DETECTING CARCINOEMBRYONIC ANTIGEN WHICH ORIGINATES IN THE DIGESTIVE SYSTEM EPITHELIUM DERIVED FROM EMBRYONIC ENTHODERMAL TISSUE ARE DISCLOSED.
Inventors
- 👤 Samuel Orkin Freedman
- 👤 John Henry Krupey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:15
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/435; C07K14/705; A; A61; A61K; A61K51/00; A61K51/02; A61K51/04; A61K51/08; A61K51/10; A61K51/1045; A61K51/1048; C07K16/00; C07K16/18; C07K16/28; C07K16/30; C07K16/3007; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/575; G01N33/57565; A61K2123/00; A61K39/00; Y; Y10; Y10S; Y10S435/00; Y10S435/961; Y10S436/00; Y10S436/804; Y10S436/811; Y10S436/813
Claims Analysis
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References Cited (Backward Citations)
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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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |