Patent US3105012A successfully refreshed from Google Patents.
US3105012A
Expired / Lapsed
US
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Antigen products and means for producing the same
Assignee: Parke Davis and Co LLC
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Filing: 1961-10-19
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Granted: 1963-09-24
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Expires: 1981-10-19
Abstract
No abstract record available.
Inventors
- 👤 Frank B Brandon
- 👤 Alton R Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:09
CPC Classifications
A; A61; A61K; A61K39/00; A61K39/12; A61K39/29; A61K39/155; C; C12; C12N; C12N7/00; C12N2730/00; C12N2730/00011; C12N2730/10011; C12N2730/10111; C12N2730/10134; C12N2730/10151; C12N2760/00; C12N2760/00011; C12N2760/16011; C12N2760/16034; Y; Y10; Y10S; Y10S436/00; Y10S436/82; Y10S530/00; Y10S530/806; Y10S530/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
PROCESS FOR THE PREPARATION OF ANTIGEN PRODUCTS WHICH COMPRISES: PLACING AN AQUEOUS SOLUTON CONTAINING VIRUS ANTIGEN IN CONTACT WITH WETTED HYDROPHILIC WATER-INSOLUBLE CROSS-LINKED DEXTRA POLYMER GEL CAPABLE OF ABSORBING WATER WITH SWELLING AND HAVING A POROSITY SMALLER THAN THE MOLEUCLAR SIZE OF SAD VIRUS ANTIGEN; WASHING SAID GEL WITH AN AQUEOUS ELUANT; AND RECEIVING FROM SAID GEL AN AQUEOUS ELUATE CONTAINING VIRUS ANTIGEN.
Claim 2
Dependent Claim
63 words
PROCESS FOR THE PREPARATION OF ANTIGEN PRODUCTS WHICH COMPRISES: PLACING AN AQUEOUS SOLUTON CONTAINING VIRUS ANTIGEN IN CONTACT WITH WETTED HYDROPHILIC WATER-INSOLUBLE CROSS-LINKED DEXTRA POLYMER GEL CAPABLE OF ABSORBING WATER WITH SWELLING AND HAVING A POROSITY SMALLER THAN THE MOLEUCLAR SIZE OF SAD VIRUS ANTIGEN; WASHING SAID GEL WITH AN AQUEOUS ELUANT; AND RECEIVING FROM SAID GEL AN AQUEOUS ELUATE CONTAINING VIRUS ANTIGEN.
References Cited (Backward Citations)
US3042667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |