Document qmjgrb23vY6K046RgNK9d9xOG

OCT 30 1946 V. C. Kline, GH 0 Manville October 28, 1946 IV o (C Owens-Corning Fiberglas Corp. (Use of Patents) Mr. Tucker, Mr. MacAlpine and the writer have checked the patents, listed as A. and B., which have been offered for use under proposed agreements by above mentioned company. Under list A we find 28 patents that may be of value as our program on glass fiber progresses. Under list B we find nine patents which may be of interest as we develop products. All the above patents should be carefully considered. We believe that our present glass fiber process when completed need not necessarily conflict with Owens-Corning patents, although it would probably avoid difficulty if we had licenses on the more questionable patents. The use of alloyed metals for orifice plates such as nickel-platinum compositions may assist us in using high melting point glasses without the cost of pure platinum metal plates. If this proves true then use of patents on such compositions may be of value, hence we have included one patent in A list on this subject. We have also included two patents on Framework for Air Filters as we understand the patent situation on this has been complicated by American Air Filter patents. We are returning herewith your file, loaned to us by Mrs. McDougall. htc/pt cc: C. F. Rassweiler, GH F. J. Wakem, GH E. R. Williams W. U. MacAlpine J. L. Tucker File H MTC 017471 List A 1,898,424 2,044,221 2,132,702 2,133,238 2,165,518 2,209,850 2,224,149 2,224,466 2.230.270 2.230.271 2,233,435 2,239,722 2,334,961 Reissue 22,078 2.287.006 2.287.007 2,291,289 2,300,736 2,308,857 2,314,956 2,315,259 ^354,961 2,363,470 2,364,569 2,390,370 2,392,805 2,397,453 2,269,497 List B 2,120,270 2,135,057 2.143.015 2.143.016 2,184,899 2,202,820 2,224,484 2,511,613 2,390,039 j1. I Framework for Air Filters ^ Framework for Air Filters X - Combined Asbestos and Glass Fiber Yarn y` 'c Glass Fabric '?>. Apparatus for Feeding Molten Glass X Fibrous Glass Textile Material for Electrical Insulation^4 Apparatus for Coating Strands A ' ' Skirted Blower X Apparatus for Forming Vebs of Fibrous Materials v Method of Producing Combined Asbestos and Glass Fiber Yarn; Glass Stock for Electric Melting X Apparatus for Making Fibers (Turbine) X Glass Composition (Alkali ffee Glass) ' Sliver Formation V Apparatus for Making Glass Wool ' Method for Making Glass Wool -- Apparatus for Making Siliceous Fibers Method of Making Filamentous Glass /, Sodium Calcium Borosilicate Glass r Electric Furnace X Treating Glass Fibers /~U< ' Glass Quiupusltlbu---- Method of Making Sliver \ High Speed Traverse pr^L f. Manufacture of Glass Yarn % Glass Fiber Strand < _ Treatment of Fibrous Material ( r; Nickel-Platinum Alloy -I a r/" Wire Having a Covering of Fibrous Material X Fabric Belting ? Packing Material for Fractionating and Scrubbing Towers Fibrous Material for Fluid Contacts Fiber Glass Wicking ^ Comniutator t High Voltage Insulated Cable * Transparent Composite Material Insulated Electrical Conductor '/. h LL. * MTC 017472