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US Patent 6615611 - High yield diamond
US Patent Issued on September 9, 2003
Estimated Patent Expiration Date:
September 26, 2020Estimated 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.
Estimated Patent Expiration Date:
September 26, 2020Estimated 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.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. | InventorsApplicationNo. 09/669137 filed on 09/26/2000US Classes:63/32GEMField of Search63/32GEMExaminersPrimary: Swann, J. J.Assistant: Chop, Andrea Attorney, Agent or FirmUS Patent References1291506, 2009390, D137163, 2340659, 3286486, 3394692, 3528261, 3585764, 3796065, 3808836, 4020649, Brilliantized step cut diamondIssued on: 05/03/1977 Inventor: Grossbard4118949, Brilliantized step cut stone Issued on: 10/10/1978 Inventor: Grossbard4306427, Chrysoberyl gemstones Issued on: 12/22/1981 Inventor: Urban4308727, Brilliant-cut stone Issued on: 01/05/1982 Inventor: Elbe4555916, Step-cut stone which has been brilliantized Issued on: 12/03/1985 Inventor: Grossbard4708001, Faceted gem cut from shallow gemstone material Issued on: 11/24/1987 Inventor: Alburger4738240, Process for cutting a diamond to provide an invisible mounting Issued on: 04/19/1988 Inventor: Aich5072549, Method of cutting gemstones and product Issued on: 12/17/1991 Inventor: Johnston5186024, High brilliance step-cut stone and method of making same Issued on: 02/16/1993 Inventor: Waters, Jr.5462474, Method of facetting a gem Issued on: 10/31/1995 Inventor: Hansen5657646, Jewel having multiple culets Issued on: 08/19/1997 Inventor: Rosenberg5722261, Torous ring gemstone and method for making same Issued on: 03/03/1998 Inventor: Lehrer5970744Cut cornered square mixed-cut gemstone Issued on: 10/26/1999 Inventor: Greeff International ClassA44C 17/00 (20060101) |
