Method for making silicone hydrogel contact lenses

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11427685
APP PUB NO 20190300654A1
SERIAL NO

16365973

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

The invention provides a method for making silicone hydrogel contact lenses. The method of the invention is characterized by using an organic solvent as a processing-aid tool for controlling lens diameter without significantly affecting lens equilibrium water content during cast-molding of soft contact lenses from a polymerizable composition. By adjusting the weight percentage of the organic solvent in a polymerizable composition for making SiHy contact lenses, one can adjust lens diameter of produced SiHy lenses to meet target without affecting adversely the lens properties.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • ALCON INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Breitkopf, Richard Charles Dunwoody, US 24 46
Ge, Junhao Johns Creek, US 45 289
Kumi, Augustine Twum Grayson, US 17 29
Lang, Weihong Suwanee, US 42 762
Wu, Daqing Suwanee, US 62 753
Zhang, Steve Yun Sugar Hill, US 53 105

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Feb 28, 2026
7.5 Year Payment $3600.00 $1800.00 $900.00 Feb 28, 2030
11.5 Year Payment $7400.00 $3700.00 $1850.00 Feb 28, 2034
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00