Barbara E Simpson, Norman A Gervais: Sustained release capsule for ruminants. Eli Lilly and Company, Barnes & Thornburg, November 22, 1983: US04416659 (36 worldwide citation)

A sustained release capsule for introduction through the esophagus to the rumen of a ruminant has a tubular barrel containing a body of active composition urged by a piston and spring into sealing engagement with a constriction end wall shaped with a peripheral curved border leading to a frustoconic ...

John W Kleber, Barbara E Simpson: Growth promotant controlled release formulations and method of treatment. Eli Lilly and Company, Charles W Ashbrook, Arthur R Whale, June 8, 1982: US04333919 (19 worldwide citation)

Controlled release formulations comprised of a growth promoting agent admixed with a copolymer derived from lactic acid and glycolic acid and which is substantially free of polymerization catalyst are effective in the prolonged growth promotion of ruminants. A method for continuous dosing of active ...