A state judge today rejected the explanation former PKF Pacific Hawaii LLC managing partner Patrick Oki gave for the elaborate schemes he used to steal nearly $500,000 from the accounting firm and found Oki guilty of multiple counts of theft, money laundering, forgery and using a computer to commit the crimes.

Oki, 47, faces a mandatory 20-year prison term for computer crimes, the most serious of the charges, at sentencing in October.

During a two-week, non-jury trial in February, Oki took the witness stand and admitted that he created fictitious companies and employees, phony contracts and correspondence and doctored invoices and other documents to collect hundreds of thousand of dollars in false reimbursements from his own company. He said he did that to claim money that was owed to him and that his actions didn’t harm the company.

Circuit Judge Rom Trader said today that Oki abused his professional knowledge, skills and experience as a certified public accountant and certified fraud examiner to defraud his partners.