Patents Assigned to Black Donuts Engineering Oy
  • Tire tread
    Patent number: D702627
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: April 15, 2014
    Assignee: Black Donuts Engineering Oy
    Inventors: Jouni Juhani Raatikainen, Henri Sakari Kossi, Mikko Valtteri Sironen, Mikko Tapani Väänänen, Marko Christer Johannes Ylitolva
  • Tire tread
    Patent number: D721322
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: January 20, 2015
    Assignee: Black Donuts Engineering Oy
    Inventors: Jouni Juhani Raatikainen, Henri Sakari Kossi, Mikko Valtteri Sironen, Mikko Tapani Väänänen, Marko Christer Johannes Ylitolva
  • Tire tread
    Patent number: D733038
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: June 30, 2015
    Assignee: Black Donuts Engineering OY
    Inventors: Jouni Juhani Raatikainen, Henri Sakari Kossi, Mikko Valtteri Sironen, Mikko Tapani Väänänen, Marko Christer Johannes Ylitolva
  • Tire tread
    Patent number: D769800
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: October 25, 2016
    Assignee: BLACK DONUTS ENGINEERING OY
    Inventors: Jouni Juhani Raatikainen, Henri Sakari Kossi, Mikko Tapani Väänänen, Marko Christer Johannes Ylitolva
  • Tire tread
    Patent number: D780668
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: March 7, 2017
    Assignee: BLACK DONUTS ENGINEERING OY
    Inventors: Jouni Juhani Raatikainen, Henri Sakari Kossi, Mikko Valtteri Sironen
  • Tire tread
    Patent number: D783506
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: April 11, 2017
    Assignee: BLACK DONUTS ENGINEERING OY
    Inventors: Henri Sakari Kossi, Jouni Juhani Raatikainen, Mikko Tapani Väänänen
  • Tire tread
    Patent number: D783507
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: April 11, 2017
    Assignee: BLACK DONUTS ENGINEERING OY
    Inventors: Jouni Juhani Raatikainen, Henri Sakari Kossi, Marko Christer Johannes Ylitolva