Maro Publications

Contact Lenses

Patents with Abstracts

*10/24/2012

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Patents with Abstracts

5. 8,287,269 
Molds for use in contact lens production
 
Dubey, Song and Schlagel of Johnson & Johnson Vision Care, Inc., Florida, developed molds useful in the production of contact lenses with seamless edges and in which molds movement of one mold half in relation to the other mold half is decreased. These results are attained by providing mold halves with shoulder stops and seam-matching features. (RDC 10/24/2012)

4. 8,241,574 
Ophthalmic device comprising a holographic sensor
 
Burles et al of Smart Holograms Limited, Great Britain, developed contact lenses using  a holographic element consisting of phenylboronic acid group and a hologram.  The hologram is used to focus incoming light. This allows the user to see clear and unimpaired images overcoming many of the shortfalls of traditional simultaneous vision and translating lenses.  an accurate yet minimally invasive method of detection of an ocular analyte.  Such sensing technology also allows for the continuous, real-time sensing of glucose or other carbohydrates. The invention thus may improve the lives of patients having diabetes and decrease such patients' risk of developing hypoglycemia or hyperglycemia. (RDC 8/17/2012)

3. 8,211,955 
Actinically-crosslinkable silicone-containing block copolymers
 
Chang and Wang of Novartis AG, Switzerland, developed a new class of silicone prepolymers containing poly(oxyalkylene) blocks, polysiloxane blocks, and actinically-crosslinkable groups which are acryl groups, thiol groups, ene-containing groups.  A preopolymer of the invention is prepared in a one-pot procedure according to the Michael addition of thiol to electron deficient alkenes, such as .alpha.,.beta.-unsaturated carbonyl compounds, without need for additional reaction step(s) to introduce actinically crosslinkable groups. The present invention is also related to silicone hydrogel contact lenses made from this class of silicone-containing prepolymers and to methods for making the silicone hydrogel contact lenses. (RDC 7/10/2012)

2. 8,133,960 
Biomedical devices
 
Linhardt, McGee and Nunez of Bausch & Lomb, New York, developed a material for contact lenses by forming a random copolymer comprising hydrophilic units and hydrophobic units with thio carbonyl thio fragment of a reversible addition fragmentation chain transfer ("RAFT") agent.(RDC 5/4/2012)

1. 8,129,442 
Hydrophilic polysiloxane macromonomer, and production and use of the same
 
Ueyama, Ikawa and Iwata of CooperVision International Holding Company, Barbados, developed hydrophilic polysiloxane macromonomers containing polyoxyethylene as a hydrophilic side chains pendant to a polysiloxane main chain for imparting transparency, oxygen permeability, and hydrophilic properties to a contact lens is disclosed.  The properties of the material are controlled by regulating the length of the polysiloxane main chain, the length of the hydrophilic polyoxyethylene side chains, and the number of the side chains. (RDC 4/19/2012)

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Roger D. Corneliussen
Editor
www.maropolymeronline.com

Maro Polymer Links
Tel: 610 363 9920
Fax: 610 363 9921
E-Mail: cornelrd@bee.net  

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Copyright 2012 by Roger D. Corneliussen.
No part of this transmission is to be duplicated in any manner or forwarded by electronic mail without the express written permission of Roger D. Corneliussen
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** Date of latest addition; date of first entry is 4/19/2012.