The Washington state wine producer Stimson Lane Vineyards & Estates has reported a third quarter operating profit of US$7.1m, an increase of 9.8%, continuing a strong year for the company.   The wine company's revenues increased by 9.6% to US$54.7m, the company reported, driven by an increase in premium case sales of 8.4%. Leading the way was Chateau Ste. Michelle, Stimson Lane's Woodinville, Wash., winery, with sales up 9.5%.