Patent EP0245535A1 successfully refreshed from Google Patents.
EP0245535A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Ultrasonically modulated polymeric devices for delivering compositions
Assignee: Massachusetts Institute of Technology
•
Filing: 1986-05-16
•
Granted: —
•
Expires: 2006-05-16
Abstract
Abstract A composition such as a biologically active substance is delivered upon demand from a polymeric matrix by exposing the polymeric matrix containing the composition to ultrasonic energy.
Inventors
- 👤 Robert S. Langer
- 👤 Joseph Kost
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 01:28
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0002; A61K9/0009; A61K41/00; A61K41/0047; A61K9/20; A61K9/2004; A61K9/2022; A61K9/2027; A61K9/2031; A61L; A61L27/00; A61L27/50; C; C08; C08G; C08G67/00; C08G67/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
48 words
A process for delivering a composition on demand which comprises: incorporating said composition within a polymeric matrix, surrounding said composition and polymeric matrix with a liquid medium, and exposing said polymeric matrix to ultrasonic energy thereby to degrade said polymeric matrix and release said composition from said matrix.
Claim 2
Dependent Claim
48 words
A process for delivering a composition on demand which comprises: incorporating said composition within a polymeric matrix, surrounding said composition and polymeric matrix with a liquid medium, and exposing said polymeric matrix to ultrasonic energy thereby to degrade said polymeric matrix and release said composition from said matrix.
Claim 3
Dependent Claim
23 words
The process of claim 1 wherein said polymeric matrix and composition are implanted in vivo and said composition is a biologically active substance.
Claim 4
Dependent Claim
17 words
The process of any one of claims 1 or 2 wherein said polymeric matrix is a polyanhydride.
Claim 5
Dependent Claim
22 words
The process of any one of claims 1 or 2 wherein said polymeric matrix is a copolymer of ethylene and vinyl acetate.
Claim 6
Dependent Claim
13 words
The process of claim 2 wherein said biologically active substance is a drug.
Claim 7
Dependent Claim
12 words
The process of claim 2 wherein said biologically active composition is insulin.
Claim 8
Dependent Claim
11 words
The process of claim 1 wherein the composition is a fragrance.
Claim 9
Dependent Claim
11 words
The process of claim 1 wherein said composition is a pheromone.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.