New-cut diamond shape
Patent 6604382 Issued on August 12, 2003. Estimated Expiration Date: 
March 15, 2022. 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.
March 15, 2022. 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 References 732119 839356 D143471 3534510 3585764 3763665 Method for cutting ornamental transparent gemstones and products produced therefrom Process for cutting a diamond to provide an invisible mounting Diamond sawing process D337544 InventorApplicationNo. 097426 filed on 03/15/2002US Classes:63/32, GEMD11/89, Jewel, gem or signetD11/90FacetedExaminersPrimary: Chop, AndreaAttorney, Agent or FirmForeign Patent References
International ClassA44C 017/00AbstractDisclosed are a new diamond cutting method and a diamond shape or proportion giving an increased brightness and different brilliant colors to the cut jewel. A piece of diamond having a crown or bezel and a pavilion converging up and down from its girdle is prepared; the table of the crown is cut into a regular polygon having straight sides of an integer multiple of three; star facets, upper-main facets and paired upper-girdle facets are formed on the oblique annular surface between the polygonal table and the girdle; and lower-girdle facets and lower-main facets are cut on the pavilion. The height of the diamond piece is approximately 64% of the diameter of the girdle; the height of the crown is approximately 15.7%; the height of the pavilion is approximately 48.3%; and the largest width of the girdle is approximately 1.2 to 1.4%. The angle formed between the ridge of the crown and the ridge of the pavilion is approximately 77 degrees. | |
