Patent US3553310A successfully refreshed from Google Patents.
US3553310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immunologically reactive particles
Assignee: Bayer Corp
•
Filing: 1967-12-28
•
Granted: 1971-01-05
•
Expires: 1987-12-28
Abstract
Abstract INSOLUBLE REACTIVE PARTICLES ARE FORMED AND THEN DIRECTLY CHEMICALLY COUPLED WITH BIOLOGICAL MATERIALS TO FORM USEFUL PARTICLES. THE REACTIVE PARTICLES ARE FORMED BY ATTACHING TO THE SURFACES OF DISCRETE CARRIED PARTICLES COMPOUNDS WHICH STABILIZE THE PARTICLES AND WHICH FORM ALDEHYDE ACTIVE MOIETIES ON SAID SURFACES. THE USEFUL COMPOUNDS FOR THIS PURPOSE ARE ALPHA, BETA-UNSATURATED ALDEHYDES AND DIALDEHYDES. IMMUNOLOGICAL TESTING CAN BE CARRIED OUT WITH THE INDICATOR PARTICLES OF THIS INVENTION WHEN IMMUNOLOGICAL MATERIALS ARE COUPLED TO THE CARRIER PARTICLES.
Inventors
- 👤 Louis L Csizmas
- 👤 Raymond Vincent Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:45
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/543; Y; Y10; Y10S; Y10S436/00; Y10S436/811; Y10S436/814; Y10S436/815; Y10S436/817; Y10S436/818; Y10S436/826; Y10S530/00; Y10S530/81; Y10S530/812; Y10S530/815; Y10S530/816
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |