A 64-year-old man was sentenced to more than 30 years in prison Tuesday after becoming the first defendant in Multnomah County to be found guilty by a jury since police and prosecutors secured grants to start processing thousands of untested sexual assault kits.

Curtis Clint Williams attacked the young woman, a 19-year-old stranger, in 2011 after he met her near a TriMet ticket machine and raped her in his apartment in downtown Portland.

Currently, 40 of the 3,000 untested sexual assault kits statewide remain to be tested for DNA by a private Utah lab hired in 2015 to eliminate the backlog.

The kits -- which include blood, semen, saliva and hair evidence taken off the bodies of victims -- had been gathering dust on police evidence shelves. That’s in part because of inattention and in part because the state crime lab struggled to keep up with demand.

Williams’ case highlights a major law enforcement effort underway to remedy past neglect and delays in holding rapists and other sex offenders responsible for their crimes, even when the evidence was right in front of authorities.

Police not only had the forensic evidence collected during a sexual assault exam of the 19-year-old victim, but they knew his name based on information provided by the victim.

The woman told police that Williams approached her, complimented her and asked her to ride a MAX train to a park in the Lloyd District. She said yes. He then offered her an MP3 battery and convinced her to go back to his home, the Alder Hotel apartments at 415 S.W. Alder St. Once there, he raped her.

In 2016, authorities tested her sexual assault examination kit. State police learned in December 2016 that DNA in the kit matched Williams, but it took six more months before he was indicted in June 2017.

Investigators said they needed the time to take another DNA sample from Williams to make sure the DNA was his, to talk to the woman to see if she still wanted to go forward with a prosecution and to analyze legalities of the case to ensure that Williams could still be prosecuted.

Williams was indicted a month after another woman, who was 23 and homeless, reported that Williams had invited her to stay at an 82nd Avenue motel and then allegedly raped her in May 2017. She ran out of the apartment partially clothed and into a bar to report the attack, according to court papers. Williams is scheduled to go to trial in that case later this month.

At his sentencing Tuesday for the 2011 rape, Williams clutched a Bible and used a cane to walk into the courtroom of Multnomah County Circuit Judge Kathleen Dailey. He made no statements, except to interrupt one of the prosecutors by calling the victim a derogatory name.

The woman had chosen not to attend the sentencing hearing.

Prosecutors Amity Girt and Tara Gardner asked the judge to sentence Williams to 40 years in prison. A jury last month found him guilty of first-degree rape, sodomy, unlawful sexual penetration and sexual abuse.

Defense attorney Drake Durham asked for 25 years, the minimum that Oregon law allows in Williams’ case.

Dailey decided on 33 years. Williams won't get time off for good behavior but will get credit for the year he’s already spent in jail. He will be 96 on his release date.

-- Aimee Green