United States Patent (10) Patent No.: US 8,273,274 B2 Davalian (45) Date of Patent: *Sep
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US008273274B2 (12) United States Patent (10) Patent No.: US 8,273,274 B2 DaValian (45) Date of Patent: *Sep. 25, 2012 (54) METHOD FOR THE MANUFACTURE OF 5,302.401 A 4/1994 Liversidge et al. STABLE, NANO-SIZED PARTICLES 5,336,507 A 8/1994 Na et al. 5,340,564 A 8/1994 Illig et al. 5,346,702 A 9, 1994 Na et al. (75) Inventor: Dariush Davalian, San Jose, CA (US) 5,352.459 A 10/1994 Hollister et al. 5,354,560 A 10, 1994 Lovrecich (73) Assignee: Abbott Cardiovascular Systems Inc., 5,384,124 A 1/1995 Courteille et al. Santa Clara, CA (US) 5,429,824 A 7, 1995 June 5,503,723 A 4/1996 Ruddy et al. c - r 5,510, 118 A 4/1996 Bosch et al. (*) Notice: Subject to any distic the t 5,518, 187 A 5/1996 Bruno et al. patent is extended or adjusted under 35 5,518,738 A 5/1996 Eickhoff et al. U.S.C. 154(b) by 288 days. 5,534.270 A 7/1996 De Castro 5,536,508 A 7/1996 Canal et al. This patent is Subject to a terminal dis- 5,552,160 A 9/1996 Liversidge et al. claimer. 5,560,931 A 10, 1996 Eickhoff et al. 5,560,932 A 10/1996 Bagchi et al. (21) Appl. No.: 12/727,129 5,565,188 A 10/1996 Wong et al. 5,569,448 A 10/1996 Wong et al. 1-1. 5,571,536 A 11/1996 Eickhoff et al. (22) Filed: Mar 18, 2010 5,573,783 A 1 1/1996 Desieno et al. (65) Prior Publication Data (Continued) US 2010/O244293 A1 Sep. 30, 2010 FOREIGN PATENT DOCUMENTS Related U.S. Application Data WO 93.25190 12/1993 (Continued) (63) Continuation of application No. 12/413.478, filed on Mar. 27, 2009, now Pat. No. 7,828,996. OTHER PUBLICATIONS (51) Int. Cl. U.S. Appl. No. 12/165,173, filed Jun. 30, 2008, Ngo et al. B6B I/O (2006.01) (Continued) (52) U.S. Cl. ................................. 264/9: 264/405; 425/6 (58) Field of Classification Search .............. 264/9, 405: Primary Examiner — Christina Johnson 425/6 Assistant Examiner — Saeed Huda See application file for complete search history. (74) Attorney, Agent, or Firm — Squire Sanders (US) LLP (56) References Cited (57) ABSTRACT U.S. PATENT DOCUMENTS The current invention relates to methods of making nano particles of a material with a narrow polydispersity. The par 3,737,337 A 6/1973 Schnoring et al. 4,162.282 A 7/1979 Fulwyler et al. ticle materials are active agents, organic compounds, poly 4,826,689 A 5, 1989 Volanto mers, and combinations thereof. 5,145,684 A 9/1992 Liversidge et al. 5,298,262 A 3, 1994 Na et al. 20 Claims, 2 Drawing Sheets US 8,273,274 B2 Page 2 U.S. PATENT DOCUMENTS Bin Choy et al., “Uniform Biodegradable Hydrogel Microspheres 5,580,579 A 12/1996 Ruddy et al. Fabricated by a Surfactant-Free Electric-Field-Assisted Method”. 5,585,108 A 12/1996 Ruddy et al. Macromol. 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