1
Bang M Kim: Multilayer composite structure for smooth surfaces. General Electric Company, William H Steinberg, James C Davis Jr, Paul R Webb II, December 29, 1987: US04716072 (65 worldwide citation)

Composite sheets with layers possessing different properties are provided which can be compression molded to produce molded panels with smooth glossy surfaces. A fiber free outer layer is laminated to a bulk layer comprising fiber mat compounded with thermoplastic resin filled with chopped fibers. T ...


2
Bang M Kim, Donald E Woodmansee: Apparatus for reducing thermoplastic material compression mold cycle time. General Electric Company, Patrick R Scanlon, James C Davis Jr, Paul R Webb II, August 18, 1992: US05139407 (61 worldwide citation)

A thermoplastic sheet is placed between a pair of mold members each having a thermal insulator and a mating metal mold insert. RF energy is applied to the inserts to dielectrically heat and melt the thermoplastic sheet. The heated sheet is then deformed in a low pressure press with the insulators. T ...


3
Bang M Kim: Method for continuous measurement of the sulfite/sulfate ratio. General Electric Company, Lawrence D Cutter, James C Davis Jr, Marvin Snyder, August 6, 1985: US04533440 (45 worldwide citation)

The redox potential is used as a measure of the ratio of sulfite and sulfate ions in a solution containing these ions. In one embodiment of the present invention a slip stream sample of a process solution is divided into two components one of which is oxidized to serve as a reference solution. The r ...


4
Bang M Kim: Multilayered mold structure for hot surface molding in a short cycle time. General Electric Company, Patrick R Scanlon, Paul R Webb II, January 5, 1993: US05176839 (39 worldwide citation)

A multilayered insulated mold structure is provided. An insulation layer provided on each of the mold cores retains heat at the molding surface, thereby increasing surface quality of the finished part. The insulating layer has a varying density across its thickness so as to have a low density center ...


5
Bang M Kim, Joseph L Weininger: Electrolytic reactor for cleaning wastewater. General Electric Company, Lawrence D Cutter, James C Davis Jr, Marvin Snyder, May 1, 1984: US04445990 (36 worldwide citation)

Wastewater from metal plating operations is treated to remove heavy metal and other contaminants, including toxic organic materials, chelating agents, and cyanide. The wastewater is passed through the cathode and anode of an electrochemical reactor in which the cathode preferably comprises a felt ma ...


6
Bang M Kim: Wastewater treatment process. General Electric Company, Lawrence D Cutter, James C Davis Jr, Marvin Snyder, May 11, 1982: US04329224 (33 worldwide citation)

Heavy metal pollutant ions are precipitated from a wastewater stream as metal sulfides through the addition of a calcium sulfide mixture to the stream. Methods are disclosed for forming the calcium sulfide mixture and for controlling the amount thereof added to the wastewater stream.


7
Bang M Kim: Method of compression molding on hot surfaces. General Electric Company, Patrick R Scanlon, James C Davis Jr, Paul R Webb II, November 12, 1991: US05064597 (30 worldwide citation)

A mold structure including layers with different physical properties is used to provide hot surface during molding. The use of a thin layer of low thermal conductivity covered by a smooth skin layer prevents quick cooling of the surface of the pre-heated plastic to be molded. The plastic surface rem ...


8
Bang M Kim: Method and apparatus for blow molding parts with smooth surfaces. General Electric Company, Patrick R Scanlon, James C Davis Jr, Paul R Webb II, August 20, 1991: US05041247 (27 worldwide citation)

A multilayer mold for use in blow molding parts within short cycle times is provided. The multilayer mold has a hard skin layer, an insulating layer and a base containing cooling means. The transient temperature increase of the skin layer of the mold as a hot parison contacts the mold is used to pro ...


9
Tak Ming Choi, Adalbert Konrad, Bang M Kim, James J Carroll Sr: Apparatus for deforming thermoplastic material using RF heating. General Electric Company, Patrick R Scanlon, James C Davis Jr, Paul R Webb II, January 21, 1992: US05082436 (27 worldwide citation)

A dielectric mold member has different thicknesses producing different radio frequency (RF) voltage drops thereacross. An RF electrode is spaced differently from a thermoplastic sheet to be dielectrically heated by the RF energy such that in one implementation the sheet receives uniform potentials a ...


10
Bang M Kim, John A Quinn, David J Graves: Gas concentration analysis method and system. Air Products and Chemicals, James C Simmons, Barry Moyerman, June 24, 1980: US04208902 (26 worldwide citation)

A method and system for analyzing gas concentration by measuring the steady state pressure in a dual membrane cell. A first membrane is exposed to a test gas and a second membrane to a reference gas where the first and second membranes have differing permeabilities. The test gas and the reference ga ...