John D Skogen

42822947, Aug 4, 1981

Oct 6, 1980

6/194493

John D. Skogen - Burnsville MN

Honeywell Inc. - Minneapolis MN

G03G 514
G03H 102

430 1

Charge leakage can occur at a photoconductor-conductor electrode interface of a thermoplastic photoconductive holographic recording medium. This reduces the charge contrast and causes poor performance of the thermoplastic-photoconductive device. In the present invention there is provided a blocking layer of polyvinyl alcohol or polyvinyl butyral between the conductive layer and the photoconductive layer.

39416593, Mar 2, 1976

Jul 11, 1974

5/487710

Robert B. Koch - Starkville MS
John D. Skogen - Burnsville MN

Honeywell Inc. - Minneapolis MN

C12K 104
C07G 702

1951035R

A continuous-flow method and apparatus for the determination of alcohol in a biological fluid such as blood is disclosed. A packed column containing the enzyme alcohol dehydrogenase physically entrapped in a acrylamide gel together with other special ingredients which extend the active life of the enzyme in the test environment is provided. Downstream of the packed column a transparent measurement cell is provided in conjunction with a fluorescence spectrophotometer which is utilized to measure the fluorescence of the effluent which is directly related to the amount of ethyl alcohol in the original sample. The fluorescence measurement is electrically transformed by conventional means into a direct readout of the alcohol content of the sample. This obtains from the fact that alcohol dehydrogenase catalyzes the oxidation of ethyl alcohol in the presence of non-fluorescening NAD to produce acetaldehyde and fluorescing NADH. sub. 2. The alcohol dehydrogenase is immobilized and its activity preserved in a manner which allows many tests to be run without any significant loss of enzyme or enzyme activity thereby accomplishing considerable cost reduction in the procedure.

44682948, Aug 28, 1984

May 19, 1983

6/496143

G. Benjamin Hocker - Minnetonka MN
John D. Skogen - Burnsville MN

Honeywell Inc. - Minneapolis MN

C25D 554

204 27

In the field of fiber optic acoustic sensors, a method for acoustic desensitization of certain sections of optic fibers by means of the use of higher elastic modulus coatings, such as an electrodeposited nickel jacket.