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USPTO Patent Rankings Data through Dec 31, 2025
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Keith C. Hong — 47 Patents

CECertainteed: 44 patents #14 of 431Top 4%
CCCertainteed Ceilings: 2 patents #16 of 49Top 35%
NONorton: 1 patents #164 of 343Top 50%
Lititz, PA: #3 of 269 inventorsTop 2%
Pennsylvania: #806 of 74,527 inventorsTop 2%
Overall (All Time): #59,703 of 4,157,543Top 2%
47 Patents All Time
Keith C. Hong has been granted 47 US patents while listed as an inventor at Certainteed. The first was granted in 2000 and the most recent in July 2025. Keith C. Hong ranks #59,703 of 4,157,543 US inventors in our database (top 1.4%). Patent records list Keith C. Hong in Lititz, PA, US.

Patents per Year

Patents granted per year, 2000 to 2025Bar chart with a peak of 5 patents in 2014.peak 52000: 1 patents20002007: 1 patents2008: 1 patents20082009: 2 patents2010: 3 patents20102011: 3 patents2012: 2 patents20122013: 3 patents2014: 5 patents20142015: 3 patents2016: 3 patents20162017: 1 patents2018: 2 patents20182019: 3 patents2020: 3 patents20202021: 4 patents2022: 1 patents20222023: 3 patents2024: 1 patents20242025: 2 patents2025

Issued Patents All Time

Showing 1–25 of 47 patents

Patent #TitleCo-InventorsDate
12359425 Acoustic ceiling panel, method of manufacture and acoustic ceiling system Yanjia Zuo, Chris Lee Heikkinen, John T. Madajewski, Phillip Evans, Chris W. Niemi +4 more 2025-07-15
12234648 Roofing product including bio-based asphalt mixture and methods of making the roofing product and the roofing-grade asphalt mixture Gregory F. Jacobs, Rajesh Ranjan 2025-02-25
11898345 Acoustic ceiling panel, method of manufacture and acoustic ceiling system Yanjia Zuo, Chris Lee Heikkinen, John T. Madajewski, Phillip Evans, Chris W. Niemi +4 more 2024-02-13
11802218 Oxidized mixture of bio-based material and asphalt, a bio-based asphaltic material, and methods of making the same Husnu M. Kalkanoglu, Gregory F. Jacobs 2023-10-31
11725388 Post-functionalized roofing granules and process for preparing same Gregory F. Jacobs, Van Nhan Nguyen 2023-08-15
11598096 Roofing product including bio-based asphalt mixture and methods of making the roofing product and the roofing-grade asphalt mixture Gregory F. Jacobs, Rajesh Ranjan 2023-03-07
11255089 Colored roofing granules with increased solar heat reflectance, solar heat-reflective shingles and process for producing same Ming Liang Shiao, Husnu M. Kalkanoglu 2022-02-22
11130708 Roofing granules with high solar reflectance, roofing products with high solar reflectance, and processes for preparing same Ming Liang Shiao, Walter T. Stephens 2021-09-28
11060288 Method of producing roofing shingles with enhanced granule adhesion Husnu M. Kalkanoglu, Joong Youn Kim 2021-07-13
11021877 Post-functionalized roofing granules and process for preparing same Gregory F. Jacobs, Van Nhan Nguyen 2021-06-01
10934456 Oxidized mixture of bio-based material and asphalt, a bio-based asphaltic material, and methods of making the same Husnu M. Kalkanoglu, Gregory F. Jacobs 2021-03-02
10876294 Algae resistant roofing granules with controlled algaecide leaching rates, algae resistant shingles, and process for producing same Husnu M. Kalkanoglu, Ming Liang Shiao, Anne B. Hardy, James A. Salvatore, Andrew Johnson 2020-12-29
10597306 Photocatalytic roofing granules, photocatalytic roofing products, and process for preparing same Gregory F. Jacobs 2020-03-24
10550574 Roofing product including bio-based asphalt mixture and methods of making the roofing product and the roofing-grade asphalt mixture Gregory F. Jacobs, Rajesh Ranjan 2020-02-04
10443241 Solar heat-reflective roofing granules, solar heat-reflective shingles, and process for producing same Ming Liang Shiao, Husnu M. Kalkanoglu, Gregory F. Jacobs 2019-10-15
10316520 Colored roofing granules with increased solar heat reflectance, solar heat-reflective shingles and process for producing same Ming Liang Shiao, Husnu M. Kalkanoglu 2019-06-11
10246879 Roofing granules with high solar reflectance, roofing products with high solar reflectance, and processes for producing same Ming Liang Shiao, Walter T. Stephens 2019-04-02
10125495 Roof covering material and method of manufacturing Ming Liang Shiao, Husnu M. Kalkanoglu, Gregory F. Jacobs 2018-11-13
10053865 Solar heat responsive exterior surface covering Husnu M. Kalkanoglu, Ming Liang Shiao, Gregory F. Jacobs 2018-08-21
9540544 Oxidized mixture of bio-based material and asphalt, a bio-based asphaltic material, and methods of making the same Husnu M. Kalkanoglu, Gregory F. Jacobs, Rajesh Ranjan 2017-01-10
9408383 Roofing granules Pierre-Olivier Petit, Gregory F. Jacobs, Kamila Plevacova 2016-08-09
9334654 Roofing products including mixtures of algae-resistant roofing granules Husnu M. Kalkanoglu, Gregory F. Jacobs 2016-05-10
9243409 Controlled time-release algae resistant roofing system Husnu M. Kalkanoglu, Joong Youn Kim, Ming Liang Shiao 2016-01-26
9217249 Roof covering material and method of manufacturing Ming Liang Shiao, Husnu M. Kalkanoglu, Gregory F. Jacobs 2015-12-22
9200451 Colored roofing granules with increased solar heat reflectance, solar heat-reflective shingles, and process for producing same Ming Liang Shiao, Husnu M. Kalkanoglu 2015-12-01

Frequent Collaborators

Ming Liang Shiao31 shared
Husnu M. Kalkanoglu29 shared
Gregory F. Jacobs27 shared
Rajesh Ranjan4 shared
Anne B. Hardy3 shared
Andrew Johnson3 shared

Nearby-Ranked Inventors

Yoshio Kawamura47
Robert E. Schwartz47
William C. Pierce47
Robert B. Barbee47
Sun Lacy47
Jonathan H. Shiell47
Hisashi Kodama47
Sanghyun Park47
Christopher A. Lins47