Cost: $ $650,000$ Date: Activity $2012-2015$ Research conducted to develop precipitator Jan $1.2016$ Fees paid engineers and lawyers to prepare patent application patent granted Jan $1,20141,240,000$ Dec $312018$ Legal fees paid to successfully defend precipitator patent $289,000$ April $12019$ Research aimed at modifying the design of the patented precipitator $165,000$ July $12023$ Legal fees paid in unsuccessful patent infringement suit against a competitor $216,000$