Stryker ( SYK) said it earned $132.1 million, or 32 cents a share, for the third quarter, up sharply from $14.4 million, or 4 cents a share, a year ago. The medical device supplier reported a 13.9% rise in quarterly revenue to $1.2 billion from $1.03 billion last year. Excluding certain items, the company earned $163.4 million, or 40 cents a share. Analysts polled by Thomson First Call expected a profit of 41 cents a share on sales of $1.2 billion. The stock was down $1.50, or 3.23%, to $45 after hours. Dana ( DCN) shares plunged after the company slashed its dividend to a penny from 12 cents and said it would reduce previously reported earnings for some 2004 and 2005 periods. Dana shares fell 89 cents, or 12.8%, to $6.08 in after-hours trading. Seagate Technology ( STX) reported net income of $272 million, or 54 cents a share for the first quarter ended Sept. 30, up from net income of $54 million, or 11 cents a share, a year ago. The maker of hard-disk drives said quarterly revenue rose to $2.09 billion from $1.56 billion last year. "Healthy demand across all markets continues, with the most robust growth coming from the notebook and consumer electronics markets," said Bill Watkins, president and chief executive. Analysts expected a profit of 54 cents a share on revenue of $2.2 billion, according to First Call. Looking ahead, the company expects GAAP earnings of 44 cents to 48 cents a share and non-GAAP earnings of 48 cents to 52 cents a share, on revenue of $2.1 billion to $2.2 billion. The forecast fell short of Wall Street's projection for earnings of 56 cents a share and revenue of $2.29 billion. Seagate's stock was up 15 cents, or 1%, to $15.20 in after-hours trading. Motorola ( MOT) said it earned $1.75 billion, or 69 cents a share, for the third quarter ended Oct. 1, up from $479 million, or 20 cents a share, a year ago. Revenue rose to $9.4 billion from $7.5 billion last year. The results topped analysts' projections for earnings of 28 cents a share and revenue of $9.1 billion, according to First Call. The company said it shipped 38.7 million handsets during the third quarter, which represents a 66% increase from the year-ago period. The stock gained 60 cents, or 2.9%, to $20.77 after hours.