John Stofko Phones & Addresses
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4884 NW Promenade Ter #104, Portland, OR 97229 (503) 641-8521
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Beaverton, OR
Publications
Us Patents
Bonding Of Solid Lignocellulosic Materials
View pageUS Patent:
6406786, Jun 18, 2002
Filed:
Aug 13, 1999
Appl. No.:
09/373545
Inventors:
John I. Stofko - Beaverton OR
Assignee:
Carbocol Systems Inc. - Portland OR
International Classification:
B32B 516
US Classification:
428327, 428407, 156622, 156284
Abstract:
Consolidated or composite lignocellulosic products such as fiberboard, particle board, chipboard, waferboard, plywood, straw composites, etc. are formed by using a particulate binder or adhesive constituting particles of crude cellulose polysaccharide materials, e. g. wood flour or ground straw, coated with MDI or other isocyanate binder in a thickness preferably in the range of 1-7 m.
Adhesive Compositions For Bonding Lignocellulosic Materials, Bonding Methods And Apparatus, And Bonded Articles
View pageUS Patent:
20050250900, Nov 10, 2005
Filed:
May 28, 2003
Appl. No.:
10/516239
Inventors:
John Stofko - Beaverton OR, US
International Classification:
C08K003/00
US Classification:
524594000
Abstract:
New adhesives for bonding lignocellulosic material such as wood and wood products include a liquid adhesive solution and a predetermined quantity of extender. One type of extender is an inorganic extender such as earth soil powder, which can be used to form an extended adhesive having a higher viscosity, which may have a liquid state, a solid state or an intermediate state. Another type of extender is an organic extender containing starch, which can be used to form an adhesive having a high viscosity. The new adhesives can be formulated to provide at least comparable bonding strength but are cheaper to use than conventional liquid adhesives in making plywood, fiber board, oriented strand board and other engineered panels and wood products.
Method And Composition For Bonding Solid Lignocellulosic Material
View pageUS Patent:
46542590, Mar 31, 1987
Filed:
Aug 2, 1985
Appl. No.:
6/761793
Inventors:
John Stofko - Beaverton OR
Assignee:
Carbocol Inc. - Beaverton OR
International Classification:
B32B 2300
US Classification:
428326
Abstract:
Wood surfaces are bonded together by heating and pressing with a bonding composition containing, on a bonding agent solids basis, from 10-70% of one or more sugars and from 90-30% of an aminoplast, and the bonding composition being used in an amount equal to the amount of straight condensation resin which would normally be used, i. e. the sugar replaces a quantity of condensation resin normally used thereby reducing the total quantity of condensation resin, thereby reducing cost and formaldehyde emissions and without any disadvantages.
Composition For Bonding Solid Lignocellulosic Materials
View pageUS Patent:
49448234, Jul 31, 1990
Filed:
Sep 26, 1985
Appl. No.:
6/780295
Inventors:
John Stofko - Beaverton OR
Assignee:
Carbocol, Inc. - Beaverton OR
International Classification:
B32B 3100
US Classification:
156283
Abstract:
Wood surfaces are bonded together by heating and pressing using a preferably dry binder formulation constituting a thorough mixture of an isocyanate and a sugar or starch, the binder formulation also preferably containing a stabilizer and optionally a catalyst and a release agent. The binder formulation may be used with good results in an amount equal to the amount of straight isocyanate resin which would normally be used, i. e. the sugar or starch replaces a quantity of the isocyanate which would normally have been used, thereby reducing the total quantity of isocyanate, thus reducing cost without any disadvantage.
Bonding Of Solid Lignocellulosic Materials
View pageUS Patent:
60836237, Jul 4, 2000
Filed:
Sep 19, 1997
Appl. No.:
8/934213
Inventors:
John I. Stofko - Beaverton OR
Assignee:
Carbocol Systems Inc. - Beaverton OR
International Classification:
B32B 516
US Classification:
428403
Abstract:
Consolidated or composite lignocellulosic products such as fiberboard, particle board, chipboard, waferboard, plywood, straw composites, etc. are formed by using a particulate binder or adhesive constituting particles of crude cellulose polysaccharide materials, e. g. wood flour or ground straw, coated with MDI or other isocyanate binder in a thickness preferably in the range of 1-7. mu. m.
System For Vapor Injection Pressing
View pageUS Patent:
50964097, Mar 17, 1992
Filed:
May 21, 1990
Appl. No.:
7/526098
Inventors:
John Stofko - Beaverton OR
Assignee:
Carbocol Systems, Inc. - Beaverton OR
International Classification:
B30B 1500
US Classification:
4254051
Abstract:
Particle board, hard board, wafer board, plywood and the like are formed by vapor injection pressing using thin plates through which steam is injected into the product under consolidation, the thin plates lying adjacent the press platens. For closed steam pressing, the plate is provided with a peripheral seal which is inflatable to seal the cavity of the press using either the same stream which is injected into the product, or a second source of steam or other gas at a higher pressure.