Patent · US Active

Multilayer solid pharmaceutical dosage forms

US10258577B2 · kind B2 · utility

1Cited by

0References

23Claims

0Family size

Assignee

Novast Laboratories, Ltd · CN

Inventors

Yisheng Chen · 安丰镇, CN
Guohua Zhang · Beijing, CN
Manman LIU · 安丰镇, CN

Key dates

Filing date	Jun 16, 2014
Grant date	Apr 16, 2019
Priority date	—
Expiry date	Jun 16, 2034

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61P25/00
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Disclosed is a multilayer solid pharmaceutical dosage form, wherein a core containing an active ingredient is coated with a first sustained-release coating layer, a drug layer containing the active ingredient is applied onto the first layer, and a second sustained-release coating layer is applied onto the drug layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.