PennWell

The company, originally called the Petroleum Publishing Company and owned by Pennsylvanian Patrick Boyle, began in 1910 with the acquisition of a magazine based in Beaumont, Texas, called Oil Investors Journal; Boyle moved the publication to Tulsa and renamed it Oil & Gas Journal.[4][5] Boyle died in 1920, and was succeeded first by his son-in-law Frank T. Lauinger, and then, in 1932, by his grandson P.C. Lauinger, who led the Journal to increasing financial success, established a number of other petroleum-oriented publications, and acquired publications in the dental care field.[6] P.C. Lauinger remained in control of the company until his death in 1988; thereafter his son-in-law, Robert Biolchini, led the company[4] until 2015, when Mark Wilmoth was elected president and CEO while Biolchini became chairman of the board.[7]

In 2018, PennWell was acquired by Clarion Events, a British company owned by The Blackstone Group.[8] In 2019, Clarion sold several PennWell divisions to Endeavor Business Media.[9]

• Water & Wastewater International[10]
• Small Times
• Solid State Technology
• Renewable Energy World.[11]
• Laser Focus World[12]
• Industrial Laser Solutions[13]
• BioOptic World[14]
• OptoIQ[15]
• Oil & Gas Journal[16]
• Offshore Magazine[17]
• Oil & Gas Financial Journal[18]
• PennEnergyl[19]
• Utility Products[20]
• Electric Light & Power[21]
• Power Engineering[22]
• Power Engineering International[23]
• HydroWorld[24]
• Cogeneration & OnSite Power[25]
• Fire Apparatus Magazine & Equipment[26]
• Journal of Emergency Medical Services[27]
• Fire Rescue[27]
• Fire Engineering Magazine
• Pennwellhub Power
• Vision Systems Design[28]
• Dental Economics[29]
• LUX Magazine[30]

• PennWell Corporation