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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.:

US 9243409 B1

PDFFull Text
Expired
Date of Patent:
Jan. 26, 2016

Filed:

Aug. 26, 2014

Controlled time-release algae resistant roofing system

Applicant:

Certainteed Corporation, Valley Forge, PA (US);

Inventors:

Husnu M. Kalkanoglu, Swarthmore, PA (US);

Keith C. Hong, Lititz, PA (US);

Joong Youn Kim, Newtown Square, PA (US);

Ming Liang Shiao, Collegeville, PA (US);

Assignee:

CertainTeed Corporation, Malvern, PA (US);

Attorney:

Paul & Paul

Primary Examiner:

Holly Le

Int. Cl.
CPC ...
B32B 5/16 (2006.01); B05D 7/00 (2006.01); E04D 13/00 (2006.01); C09C 1/00 (2006.01); A01N 25/12 (2006.01); A01N 25/26 (2006.01); A01N 59/16 (2006.01); A01N 59/20 (2006.01); C09D 5/14 (2006.01); E04D 5/12 (2006.01); E04D 1/00 (2006.01);
U.S. Cl.
CPC ...
E04D 13/002 (2013.01); A01N 25/12 (2013.01); A01N 25/26 (2013.01); A01N 59/16 (2013.01); A01N 59/20 (2013.01); C09C 1/00 (2013.01); C09D 5/14 (2013.01); E04D 1/00 (2013.01); E04D 5/12 (2013.01); E04D 2001/005 (2013.01); Y10T 428/24372 (2015.01); Y10T 428/2991 (2015.01); Y10T 428/2993 (2015.01); Y10T 428/2998 (2015.01); Y10T 428/31815 (2015.04);
Abstract

Time-release algae-resistant roofing granules have a base particle including an algaecide and an outer coating layer including another algaecide. The at least two algaecides are released over different predetermined periods. The outer layer protects the base particle from exposure to the environment for a predetermined period, then fails catastrophically so that the interior algaecide can be released.

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Kalkanoglu, Husnu. (2016). Controlled time-release algae resistant roofing system (U.S. Patent No. 9243409). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9243409

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