ANAND V ET AL: "ION-EXCHANGE RESINS: CARRYING DRUG DELIVERY FORWARD", DRUG DISCOVERY TODAY, vol. 6, no. 17, 17 September 2001 (2001-09-17), pages 905-914, XP001127363, ELSEVIER, RAHWAY, NJ, US ISSN: 1359-6446, DOI: 10.1016/S1359-6446(01)01922-5 (B1)

Anonymous: "Viscosity of Carbopol®* Polymers inAqueous Systems", Lubrizol , 24 November 2009 (2009-11-24), XP002713057, Retrieved from the Internet: URL:http://www.lubrizol.com/Pharmaceutical -Ingredients/Documents/Technical-Data-Shee ts/TDS-730-Viscosity-Carbopol-in-Aqueous-S ystems.pdf [retrieved on 2013-09-17] (B1)

JP-A- 2003 504 416 (B1)

JP-A- 2006 503 806 (B1)

JP-A- 5 279 246 (B1)

JP-A- H09 505 604 (B1)

ZELALEM AYENEW ET AL: "Trends in Pharmaceutical Taste Masking Technologies: A Patent Review", RECENT PATENTS ON DRUG DELIVERY & FORMULATION, vol. 3, 1 January 2009 (2009-01-01), pages 26-39, XP055020918, (B1)

Lyn Hughes: "Ion Exchange Resinates- The Technology Behind the Mystery", PHARMACEUTICAL TECHNOLOGY EUROPE , vol. 17, no. 4 April 2005 (2005-04), pages 2-4, XP002713056, Retrieved from the Internet: URL:http://www.pharmtech.com/pharmtech/dat a/articlestandard/pharmtecheurope/152005/1 54312/article.pdf [retrieved on 2013-09-17] (B1)

US-A1- 2006 177 414 (B1)

US-B1- 7 001 615 (B1)

WEINREB R N ET AL: "A novel formulation of an ophthalmic beta-adrenoceptor antagonist.", JOURNAL OF PARENTERAL SCIENCE AND TECHNOLOGY : A PUBLICATION OF THE PARENTERAL DRUG ASSOCIATION, vol. 46, no. 2, March 1992 (1992-03), pages 51-53, XP009172621, ISSN: 0279-7976 (B1)

WO-A1-2006/070735 (B1)

WO-A2-2008/128028 (B1)

LIANLI LI ET AL: "Utilization of a modified special-cubic design and an electronic tongue for bitterness masking formulation optimization", JOURNAL OF PHARMACEUTICAL SCIENCES, vol. 96, no. 10, 1 October 2007 (2007-10-01), pages 2723-2734, XP055079581, ISSN: 0022-3549, DOI: 10.1002/jps.20900 (B1)