Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From protein or biologically active polypeptide reactant
Reexamination Certificate
2005-01-11
2005-01-11
Nutter, Nathan M. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From protein or biologically active polypeptide reactant
C527S300000, C527S313000, C527S400000, C530S827000, C530S832000, C530S839000, C530S840000, C530S841000, C530S842000, C522S087000, C522S088000, C522S089000
Reexamination Certificate
active
06841644
ABSTRACT:
Disclosed are modified naturally occurring biocompatible biopolymers of plant and animal origin made by subjecting same to ionizing radiation in the presence of a mediating gas, typically acetylene to enable one to selectively enhance and modify one or more of the physiochemical properties of the starting materials which have a wide range of uses in medicine, food technology and other industrial applications. Notwithstanding the modifications, the biocompatibility of the biopolymer remains unchanged and no new or additional functional groups are introduced into the starting biopolymer.
REFERENCES:
patent: 3170892 (1965-02-01), Busse
patent: 3236584 (1966-02-01), Degering
patent: 3976552 (1976-08-01), Fanta et al.
Al-Assaf Saphwan
Du Plessis Tjaart Andries
Phillips Glyn Owen
Williams Peter Anthony
Galvin & Palmer
Nutter Nathan M.
Palmer Sheldon
Phillips Hydrocolloids Research Limited
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