Granted Patent
Utility
US 6,267,987 · App. 09/210,014
Positively charged poly[alpha-(omega-aminoalkyl) glycolic acid] for the delivery of a bioactive agent via tissue and cellular uptake
Inventors:
Jong-Sang Park, Min-Hyo Seo
Patented Case
View Patent ↗
Granted: Jul 31, 2001
Filed: Dec 11, 1998
Inventors
Jong-Sang Park
Min-Hyo Seo
Assignee (at issue)
SAMYANG CORPORATION
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.