US 11,890,826 B2
Method of enhancing footwear impression on porous surfaces using potassium ferrocyanide solution for footwear impression enhancement
Nam Kyu Park, Bucheon-si (KR); Byung Seon Moon, Busan (KR); Jae Mo Goh, Seoul (KR); Jin Pyo Kim, Daejeon (KR); Young Il Seo, Wonju-si (KR); Eun Ah Joo, Wonju-si (KR); Je Hyun Lee, Wonju-si (KR); and Yong Jun Kim, Cheonan-si (KR)
Assigned to REPUBLIC OF KOREA (NATIONAL FORENSIC SERVICE DIRECTOR MINISTRY OF THE INTERIOR AND SAFETY), Wonju-si (KR)
Filed by REPUBLIC OF KOREA (NATIONAL FORENSIC SERVICE DIRECTOR MINISTRY OF THE INTERIOR AND SAFETY), Wonju-si (KR)
Filed on Aug. 26, 2022, as Appl. No. 17/897,101.
Claims priority of application No. 10-2022-0064088 (KR), filed on May 25, 2022.
Prior Publication US 2023/0405948 A1, Dec. 21, 2023
Int. Cl. A61B 5/1174 (2016.01); B05D 1/02 (2006.01); B29C 59/02 (2006.01); B29C 71/02 (2006.01); B29C 71/00 (2006.01); B29C 44/56 (2006.01)
CPC B29C 71/0009 (2013.01) [B29C 44/5627 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of enhancing a footwear impression formed on a porous surface using a potassium ferrocyanide solution for footwear impression enhancement, the method comprising:
forming a porous surface sample by leaving footwear impressions into an object having a porous surface;
preparing a potassium ferrocyanide solution for footwear impression enhancement, wherein the preparing of the potassium ferrocyanide solution includes mixing an aqueous solution of potassium ferrocyanide and hydrochloric acid; and
applying the potassium ferrocyanide solution for footwear impression enhancement to the porous surface sample.