Nicholas R Parise

US Patent:

20140069862, Mar 13, 2014

Filed:

Nov 12, 2013

Appl. No.:

14/077741

Inventors:

Carol Knox - Apollo PA, US
Shawn P. Duffy - Cheswick PA, US
Luciano M. Parrinello - Allison Park PA, US
Nicholas J. Parise - Pittsburgh PA, US
Brian K. Rearick - Allison Park PA, US

International Classification:

B01D 71/26

US Classification:

21050029, 21050027, 21050028, 21050039, 21050037, 21050035, 21050042

Abstract:

The present invention is directed to microfiltration and ultrafiltration membranes comprising a microporous material. The microporous material comprises:

US Patent:

20210395436, Dec 23, 2021

Filed:

Nov 7, 2019

Appl. No.:

17/292055

Inventors:

- Tuam, IE
Elizabeth A. ZEZINKA - Cranberry Township PA, US
Emily AMOND - Allison Park PA, US
Anu CHOPRA - Pittsburgh PA, US
Michael Frank HALEY - Glenshaw PA, US
Sujit MONDAL - Gibsonia PA, US
Nicholas J. PARISE - Pittsburgh PA, US
Brian SHAUGHNESSY - Kilmaine, IE
Robert W. WALTERS - Murrysville PA, US
Wenjing XIAO - Murrysville PA, US
An-Hung YEH - Mars PA, US

International Classification:

C08G 18/44
G02B 5/23
C08G 18/10
G02B 1/04
G03C 1/73

Abstract:

The present invention relates to a photochromic article that includes a substrate and a photochromic layer formed from a curable photochromic composition. The photochromic composition includes a polyol component that includes a polycarbonate diol, an isocyanate component that includes an unblocked polyfunctional isocyanate and/or a blocked polyfunctional isocyanate, and at least one photochromic compound. The equivalents ratio of blocked/unblocked isocyanate equivalents of the isocyanate component to hydroxyl equivalents of the polyol component is at least 5:1. The photochromic article exhibits a T(Fade Half Life) at 23 C. of less than or equal to 70 seconds.