A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
167/129
A61K 39/35 (2006.01)
Patent
CA 1247008
ABSTRACT OF THE DISCLOSURE A storage-stable, high potency allergenic extract is prepared by ultrafiltration, retaining fractions having molecular weights of from 1000 to 100,000,and treating the solution with gel polymer and/or carbon absorbents. The extract is dried to a moisture content of less than one weight percent water. The purified solution and aqueous reconstituted solutions of the dried extract provide a transparent, colorless solution which has greatly increased stability, remaining transparent and colorless for extended periods.
438906
Beigler Myron A.
Calenoff Emanuel
Friesen Gerald
Nichols James
Yuh-Geng Tsay
Johnson Douglas S. Q.c.
Minnesota Mining And Manufacturing Company
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