High yield diamond
Patent 6615611 Issued on September 9, 2003. Estimated Expiration Date: 
September 26, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 26, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsApplicationNo. 09/669137 filed on 09/26/2000US Classes:63/32GEMExaminersPrimary: Swann, J. J.Assistant: Chop, Andrea Attorney, Agent or FirmInternational ClassA44C 17/00 (20060101)AbstractA high yield diamond and method of producing same. The diamond includes a plurality of main crown facets adjacent a table lying at an angle of between 23° and 40° relative to the table, a girdle, a plurality of upper pavilion facets below the girdle lying at an angle of between 45° and 80° relative to the girdle plane, and a plurality of lower pavilion facets formed between the upper pavilion facets and the culet. The upper pavilion facets extend from between one fifth to four fifths the height of the pavilion. The method is directed to a process for blocking the pavilion of the diamond prior to performing any brillianteering steps.Field of SearchGEM | |
