The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 22, 2022
Filed:
May. 10, 2017
Applicant:
Chee Yen Lim, Singapore, SG;
Inventor:
Chee Yen Lim, Singapore, SG;
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
A61M 37/00 (2006.01); B29C 39/02 (2006.01); B29C 39/42 (2006.01); B29K 105/00 (2006.01); B29L 31/00 (2006.01);
U.S. Cl.
CPC ...
A61M 37/0015 (2013.01); B29C 39/026 (2013.01); B29C 39/42 (2013.01); A61M 2037/0023 (2013.01); A61M 2037/0046 (2013.01); A61M 2037/0053 (2013.01); A61M 2207/10 (2013.01); B29K 2105/0035 (2013.01); B29K 2883/00 (2013.01); B29L 2031/7544 (2013.01);
Abstract
In the preferred embodiment, a method of making microneedles comprises i) providing a microneedle template () having a plurality of microneedles cavities () on one surface, ii) preparing a casting solution () comprising at least one matrix material and its solvent, iii) subjecting said microneedle template () to a vacuum pressure for a length of time to deprive it of air, iv) dispensing the casting solution () over the air-deprived microneedle template, v) allowing the casting solution () to be drawn into the air-deprived microneedle cavities () completely, and vi) allowing the dissolving microneedles to solidify or dry in a controlled environment.