Mark S Peters

US Patent:

52017834, Apr 13, 1993

Filed:

Sep 3, 1991

Appl. No.:

7/753924

Inventors:

Mark R. Peters - Chicago IL

International Classification:

B43L 7027
B43L 7033

US Classification:

33474

Abstract:

The drafting instrument of the invention (10) disclosed herein generally compromises a planar body in a quadrilateral, symmetrical form, having four perimeter sides (22,24,26 and 28), interconnected end to end to form a quadrilateral configuration and show an open space (40) in the interior of the body, and of which two pairs of sides are right angles to each other and positioned opposite and symmetrical to each other on the planar body. The instrument is provided in two primary embodiments, the first, adapted from a 45 degree triangular instrument, where side intersections of the present invention comprises a 135 degree, a 90 degree, a 45 degree and a 90 degree interior angle, respectively and the second adapted from a 30/60 degree triangular instrument, where side intersections of the present invention comprise a 150 degree, a 90 degree, a 30 degree and a 90 degree interior angle, respectively. The instrument is provided with a handle (18) that is integrally formed near the intersection of two of the perimeter sides on the planar body and extends perpendicular from the planar body, and in the preferred embodiment of the invention, the handle (18) is provided with a groove or rigid structure at its outer most edge for permitting easy indexing and pivoting with handle (18) to aid in reversing the instrument from side to side. The instrument includes a plurality of support points (38) extending outwardly from one face (16) of the instrument only, to permit pivoting and to support the instrument slightly above the surface upon which it is used.

US Patent:

59903406, Nov 23, 1999

Filed:

Dec 30, 1998

Appl. No.:

9/223167

Inventors:

Karl W. Haider - McKees Rocks PA
Jack C. Chan - Coraopolis PA
E. Haakan Jonsson - Cologne, DE
Uli W. Franz - Moon Township PA
Mark A. Peters - Moon Township PA
Ronald P. Taylor - Coraopolis PA

Assignee:

Bayer Corporation - Pittsburgh PA

International Classification:

C07C27108
C08G 1867

US Classification:

560 25

Abstract:

A di-hydroxy-functionalized linear non-crosslinked polyolefin is disclosed having no pendant chain-branched groups which is prepared by reacting 1,4-diacetoxy-2-butene with 1,5-cyclooctadiene in the presence of a catalyst comprising a ruthenium metal carbene complex, characterized in that the functionality number of said polyolefin as determined by NMR is 2. 0 and the viscosity of said polyolefin ranges from about 800 to 16000 mPa. s @25. degree. C. at a number average molecular weight ranging from 2,600 to 6,500 g/mole. A prepolymer comprising the reaction of a polyisocyanate with the polyolefin is also disclosed.