(10) Patent No.: US 9517190 B2
USO09517190B2 (12) United States Patent (10) Patent No.: US 9,517,190 B2 Johncock et al. (45) Date of Patent: Dec. 13, 2016 (54) COATED TITANIUM DIOXIDE TO REDUCE (2013.01); A61K 9/5021 (2013.01); A61 K THE WHITENING EFFECT ON SKN 9/5089 (2013.01); A61O 1704 (2013.01); C09C I/3661 (2013.01); C09C I/3669 (71) Applicant: Symrise AG, Holzminden (DE) (2013.01); C09C I/3692 (2013.01); A61 K 2800/413 (2013.01); A6 IK 2800/622 (72) Inventors: William Johncock, Reinbek (DE); (2013.01); A61 K 2800/63 (2013.01) Simone Peters, Buchholz (DE): (58) Field of Classification Search Martina Issleib, Hoisdorf (DE); CPC ............................ A61K 9/5021: A61K 9/5089 Jirgen Claus, Bevern (DE) See application file for complete search history. (73) Assignee: Symrise AG, Holzminden (DE) (56) References Cited (*) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S. PATENT DOCUMENTS U.S.C. 154(b) by 0 days. 3,649,321 A 3, 1972 Durrant et al. (21) Appl. No.: 14/661,4879 8,545,891 B1 10/2013 Halpern et al. (22) Filed: Mar 18, 2015 FOREIGN PATENT DOCUMENTS e JLV9 O O WO 2009/126859 A2 10/2009 (65) Prior Publication Data WO 2012, 110302 A2 8, 2012 US 2015/026551 O A1 Sep. 24, 2015 WO 2012110302 A2 * 8, 2012 ....... A61K 2800,622 * cited by examiner (30) Foreign Application Priority Data Mar. 18, 2014 (EP) ..................................... 14160519 Primary Examiner — Carlos Azpuru (74) Attorney, Agent, or Firm — Dilworth & Barrese, (51) Int. Cl. LLP A6LX 9/50 (2006.01) A6 IK 8/29 (2006.01) A6 IK 8/26 (2006.01) (57) ABSTRACT set, 3,4.
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