KK

Kevin R. Ketterer

MT Msa Technology: 8 patents #6 of 110Top 6%
MC Mine Safety Appliances Company: 4 patents #25 of 243Top 15%
Overall (All Time): #396,387 of 4,157,543Top 10%
12
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12369669 Systems and methods for providing reliable helmet suspension installation David J. Losos, John F. Rihn, Maxwell R. Naar 2025-07-29
12285071 Systems and methods for providing an assembly for releasably connecting an inner helmet and outer helmet shell David J. Losos 2025-04-29
12011057 Safety helmet Celeste L. Hort, Michael Goodspeed, Jefferson S. Mendenhall, Matthew C. Miller, James R. Tomlinson 2024-06-18
10165819 Helmet accessory adapter Robert Klotz, Rebecca Kreke 2019-01-01
9949522 Suspension connection arrangement for a suspension system of a safety helmet John F. Rihn 2018-04-24
9642412 Adjustment mechanism for a headband arrangement of a safety helmet Robert Klotz 2017-05-09
9572392 Adjustment mechanism for a headband arrangement of a safety helmet Robert Klotz 2017-02-21
RE45459 Protective helmet F. Joseph Hersick, Robert Klotz 2015-04-14
8539613 Protective helmet F. Joseph Hersick, Robert Klotz 2013-09-24
8225419 Protective helmet F. Joseph Hersick, Robert Klotz 2012-07-24
7296305 Adjustable headband Gregoire Aby-Eva, F. Joseph Hersick, Paul A. Zeller, Anthony Scoccimerra, Jr., Robert E. Bechtold 2007-11-20
7089603 Adjustable headband Gregoire Aby-Eva, F. Joseph Hersick, Paul A. Zeller 2006-08-15