MR. KENNETH ARNOLD JOHNSON, N.P.
Nursing in Minneapolis, MN

6628464, Sep 30, 2003

May 14, 1997

08/856204

Kenneth E. Johnson - Bloomington MN

Kenneth Edward Johnson - Bloomington MN

G02B 2700

359894, 359428, 42130, 42111, 124 87

The slotted peep of this invention is a device that eliminates the detrimental effects of diffracted light from its aperture. Diffraction causes light to bend toward and perpendicular to an objects edge. In a current peeps aperture diffracted light is neither controlled nor eliminated. Diffracted light creates several shortcomings in current peeps which impair their accuracy and utility. The current aperture must be oversized to allow space for the diffracted light. The visual size and shape of the current aperture will vary with changes in the light diffraction. Under low light conditions, enough light may be diffracted within the current peep aperture that a user may not be able to see through the peep. A slotted peep is designed to eliminate detrimental effects of diffracted light from its aperture. By surrounding an open space with the open ends of slots, a space is defined that has virtually no physical edges.

5112945, May 12, 1992

Feb 21, 1991

7/658442

Per Westermark - Dalinge, SE
Kenneth H. Johnson - Minneapolis MN

Regents of the University of Minnesota - Minneapolis MN

C07K 740, C07K 710

530324

Subunits of the full length 37 amino acid residue human Islet Amyloid Polypeptide, and feline Islet Amyloid Polypeptide essentially free of unpolymerized amyloid are provided. Islet Amyloid Polypeptide (IAPP) may be isolated and purified from amyloid fibrils using depolymerizing agent and chromatographic techniques. The sequences of the purified Islet Amyloid Polypeptides have been determined Purified Islet Amyloid Polypeptides are suitable for induction of anti-IAPP antibodies.

5424221, Jun 13, 1995

Jan 18, 1994

8/183150

Per Westermark - Balinge, SE
Kenneth H. Johnson - Minneapolis MN

Regents of the University of Minnesota - Minneapolis MN

G01N 3353, C07K 1626, C07K 1400, C07K 1462

436518

This invention is directed to kits for the detection of human islet amyloid polypeptide (IAPP) comprising (a) purified preparations of antibodies which react specifically with insulin or calcitonin gene-related peptides and (b) a preselected amount of human islet amyloid polypeptide which is essentially free of islet amyloid, which polypeptide is one subunit of islet amyloid and which is prepared by depolymerizing human islet amyloid; or a preselected amount of human islet amyloid polypeptide which is essentially free of islet amyloid and has the amino acid sequence: lys-cys-Asn-Thr-Ala-Thr-Cys-Ala-Thr-Gln-Arg-Leu-Ala-Asn-Phe-Leu-Val-His-Se r-Ser-Asn-Asn-Phe-Gly-Ala-Ile-Leu-Ser-Ser-Thr-Asn-Val-Gly-Ser-Asn-Thr-Tyr.

2004002, Feb 5, 2004

Jul 31, 2003

10/631929

Kenneth Johnson - Bloomington MN, US

G02B005/00, G02B007/00, G02B027/00

359/894000

The slotted peep of this invention is a device that eliminates diffracted light from its aperture. By surrounding an open space with the open ends of slots, a space is defined that has virtually no physical edges. A slot of the slotted peep is shaped to direct diffracted light parallel to or away from the perimeter of the open space. (FIG. ) shows slotted peep (). A user looking through the slotted peep would see, (). Diffracted light darkens the slots. Since light is diffracted parallel to or away from the perimeter of the slotted peep's aperture, diffraction will have no effect on the aperture. The slotted peep's aperture will virtually free of diffracted light. The slotted peep should be made in a rigid material. There is a need for a peep that eliminates diffracted light from its aperture.