Patents Assigned to Equity Enterprises
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Patent number: 7211326Abstract: A carbon material is formed by heat-treating a carbonaceous material in a reaction mix of boron oxide or its precursors and ammonia-generating phases such as melamine or its like in a nitrogen atmosphere to temperatures of 1600 to 2000° C. The surface of the carbonaceous material is transformed into a carbon material that is resistant to oxidation to temperatures of 900° C., enabling machined components to be utilized for weeks at that temperature. The carbon material also is stable in inert or vacuum environments to temperatures in the range of 1500 to 2000° C., enabling its use as aluminum evaporative boats and the like.Type: GrantFiled: August 17, 2004Date of Patent: May 1, 2007Assignee: Equity EnterprisesInventors: Lloyd R. Chapman, Cressie E. Holcombe, Jr.
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Patent number: 7063891Abstract: A carbon material is formed by heat-treating a carbonaceous material in a reaction mix of oxides of boron and boron nitride in a nitrogen atmosphere to temperatures of 1600 to 2000° C. The surface of the carbonaceous material is transformed into a carbon material that is resistant to oxidation to temperatures of 900° C., enabling machined components to be utilized for weeks at that temperature. The carbon material is also stable in inert or vacuum environments to temperatures in the range of 1500 to 2000° C., enabling its use as aluminum evaporative boats and the like.Type: GrantFiled: January 24, 2005Date of Patent: June 20, 2006Assignee: Equity EnterprisesInventors: Cressie E. Holcombe, Jr., Lloyd R. Chapman
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Patent number: 6893601Abstract: A carbon material is formed by heat-treating a carbonaceous material in a reaction mix of oxides of boron and boron nitride in a nitrogen atmosphere to temperatures of 1600 to 2000° C. The surface of the carbonaceous material is transformed into a carbon material that is resistant to oxidation to temperatures of 900° C., enabling machined components to be utilized for weeks at that temperature. The carbon material is also stable in inert or vacuum environments to temperatures in the range of 1500 to 2000° C., enabling its use as aluminum evaporative boats and the like.Type: GrantFiled: February 21, 2003Date of Patent: May 17, 2005Assignee: Equity EnterprisesInventors: Cressie E. Holcombe, Jr., Lloyd R. Chapman
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Patent number: 6830812Abstract: A carbon material is formed by heat-treating a carbonaceous material in a reaction mix of boron oxide or its precursors and ammonia-generating phases such as melamine or its like in a nitrogen atmosphere to temperatures of 1600 to 2000° C. The surface of the carbonaceous material is transformed into a carbon material that is resistant to oxidation to temperatures of 900° C., enabling machined components to be utilized for weeks at that temperature. The carbon material also is stable in inert or vacuum environments to temperatures in the range of 1500 to 2000° C., enabling its use as aluminum evaporative boats and the like.Type: GrantFiled: January 21, 2003Date of Patent: December 14, 2004Assignee: Equity EnterprisesInventors: Lloyd R. Chapman, Cressie E. Holcombe, Jr.
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Patent number: 6007873Abstract: A high emissivity coating composition for coating the interior of a furnace to direct thermal energy toward a load in the furnace wherein the furnace operates above 1100.degree. C. thereby increasing the thermal efficiency of the furnace. The high emissivity coating composition includes a high emissivity agent and a binder agent. The preferred high emissivity agent is cerium oxide which defines a high emissivity factor from approximately 1000.degree. C. to above 2000.degree. C. The binder suspension agent is formulated to define the consistency and drying characteristics of paint such that the coating can be applied in a manner similar to the manner in which paint is applied. Moreover, the binder/suspension agent withstands the final use temperature.Type: GrantFiled: April 28, 1997Date of Patent: December 28, 1999Assignee: Equity EnterprisesInventors: Cressie E. Holcombe, Jr., Lloyd R. Chapman
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Patent number: 5668072Abstract: A high emissivity coating for coating the interior of a furnace to direct thermal energy toward a load in the furnace wherein the furnace operates above 1100.degree. C. The high emissivity coating includes a high emissivity agent and a binder agent. The preferred high emissivity agent is cerium oxide which defines a high emissivity factor from approximately 1000.degree. C. to above 2000.degree. C. The binder suspension agent is formulated to define the consistency and drying characteristics of paint such that the coating can be applied in a manner similar to the manner in which paint is applied. Moreover, the binder/suspension agent withstands the final use temperature.Type: GrantFiled: May 9, 1996Date of Patent: September 16, 1997Assignee: Equity EnterprisesInventors: Cressie E. Holcombe, Jr., Lloyd R. Chapman