Roger A Olsen

US Patent:

47833700, Nov 8, 1988

Filed:

May 28, 1986

Appl. No.:

6/868134

Inventors:

John G. Chernega - Stillwater MN
John A. Martens - North Oaks MN
Roger A. Olsen - Woodbury MN
Auburn B. Cottinham - late of Lake Elmo MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

G11B 5702

US Classification:

4284259

Abstract:

Magnetic recording media have been made with a new class of binder resins having the formula ##STR1## wherein the portion of the copolymer having the a subscript comprises 50 to 97 weight percent of the copolymer, the portion of the copolymer having the b subscript comprises 0 to 30 weight percent of the copolymer, the portions of the copolymer having the c and d subscripts combined comprise 0. 1 to 20 weight percent of the copolymer, while d can be 0, R. sub. 1 is an alkyl group selected from --CH. sub. 3 and --(CH. sub. 2). sub. nl CH. sub. 3 wherein nl=1-10, R. sub. 2 is an alkylene group which may be (CH. sub. 2). sub. n1 or (CH. sub. 2). sub. n2 (CH)(CH. sub. 2). sub. n3 CH. sub. 3, n2=1-4 and n3=0-4, R. sub. 3 may be selected from --H and --CH. sub.

US Patent:

49237110, May 8, 1990

Filed:

Oct 12, 1989

Appl. No.:

7/420356

Inventors:

John G. Chernega - Stillwater MN
John A. Martens - North Oaks MN
Roger A. Olsen - Woodbury MN
Auburn B. Cottingham - late of Lake Elmo MN

Assignee:

Minnesota Mining and Manufacturing Company - Saint Paul MN

International Classification:

G11B 570
B05D 306

US Classification:

427 44

Abstract:

Magnetic recording media have been made with a new class of binder resins having the formula ##STR1## wherein the portion of the copolymer having the a subscript comprises 50 to 97 weight percent of the copolymer, the portion of the copolymer having the b subscript comprises 0 to 30 weight percent of the copolymer, the portions of the copolymer having the =c and d subscripts combined comprise 0. 1 to 20 weight percent of the copolymer, while d can be 0, R. sub. 1 is an alkyl group selected from --CH. sub. 3 and ##STR2## wherein n1=1-10, R. sub. 2 is an alkylene group which may be --CH. sub. 2). sub. nl or ##STR3## n2=1-4 and n3=0-4, R. sub. 3 may be selected from --H and --CH. sub. 3, n5=0 or 1, and X is a linking group which is stable under electron beam irradiation and may be, for example, ##STR4## R. sub. 4 =C1-6 alkylene, for example, with the proviso that when d=0, there is at least one additional polymer in the binder.

US Patent:

49526189, Aug 28, 1990

Filed:

May 3, 1988

Appl. No.:

7/189614

Inventors:

Roger A. Olsen - Woodbury MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

A61L 1500
C08L 100
C08L 502
C08L 504

US Classification:

524 17

Abstract:

Hydrocolloid adhesive compositions are disclosed comprising a rubbery elastomeric base having dispersed therein hydrocolloid particles, at least some of which are polycationic hydrocolloid particles. The compositions have enhanced resistance to breakdown by body fluids and are especially useful as wound dressings.

US Patent:

48898953, Dec 26, 1989

Filed:

Aug 8, 1988

Appl. No.:

7/229278

Inventors:

John G. Chernega - Stillwater MN
John A. Martens - North Oaks MN
Roger A. Olsen - Woodbury MN
Auburn B. Cottingham - late of Elmo MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

C07C12504

US Classification:

525278

Abstract:

Magnetic recording media have been made with a new class of binder resins having the formula ##STR1## wherein the portion of the copolymer having the a subscript comprises 50 to 97 weight percent of the copolymer, the portion of the copolymer having the b subscript comprises 0 to 30 weight percent of the copolymer, the portions of the copolymer having the c and d subscripts combinec comprise, 0. 1 to 20 weight percent of the copolymer, while d can be 0, R. sub. 1 is an alkyl group selected from --CH. sub. 3 and --(CH. sub. 2). sub. n1 CH. sub. 3 wherein n1=1-10, R. sub. 2 is an alkylene group which may be --CH. sub. 2). sub. n1 or --CH. sub. 2). sub. n2 (CH)(CH. sub. 2). sub. n3 CH. sub. 3, n2=1-4 and n3=0-4, R. sub. 3 may be selected from --H and --CH. sub.

US Patent:

20140363583, Dec 11, 2014

Filed:

Aug 29, 2014

Appl. No.:

14/473034

Inventors:

- Burnaby, CA
Keith Beveridge - Edina MN, US
David Osland - Minneapolis MN, US
Roger Olsen - Burnsville MN, US
Penny Chatterton - Shakopee MN, US
Jay Bickford - Savage MN, US

International Classification:

C03C 17/00
C03C 17/32

US Classification:

427508

Abstract:

A curing lamp apparatus mounts to a work surface with a suction cup. A base is mounted to the suction cup. A flexible neck extends from the base to the lamp head. The lamp head includes a lamp element with first and second UV light sources which emit UV light at different wavelengths. A control circuit is located in the base. A heat sink is provided on the lamp head including a conductive plate and projecting pins. A protective housing encloses the plate and pins. A timing circuit controls the light source for automatic shut off. External or internal power is provided for the control circuit.