* Oncor Inc., of Gaithersburg, Md., received a notice of allowance for its Sunrise Amplification Detection System for the direct quantitative analysis of DNA amplificat ion products.
* SciClone Pharmaceuticals Inc., of San Mateo, Calif., received a notice of allowance for a patent covering the use of the firm's lead drug, thymosin alpha 1, to treat hepatitis C.
* Sepracor Inc., of Marlborough, Mass., received patent No. 5,786,357 for zopiclone, a single-isomer form of a drug marketed as Imovane in Europe by Paris-based Rhone-Poulenc Rorer for sleep disorders.
* Siga Pharmaceuticals Inc., of New York, holds the license to a vaccine delivery patent granted to Rockefeller University, also of New York. The company is using the technology in a vaccine candidate for group A streptococcal pharyngitis, or strep throat.