Searching US Patent Collection...

	PAT. NO.		Title
1	8,830,806		Optical disc with a theft deterrent coating
2	7,770,030		Content guard system for copy protection of recordable media
3	7,417,713		Optical disc with a theft deterrent coating
4	7,380,137		Content guard system for copy protection of recordable media
5	7,082,413		System and method for authorized compression of digitized music
6	6,832,319		Content guard system for copy protection of recordable media
7	5,261,054		System for storing a history of sampled pointer signals when a pointer interrupt routine is interrupted by a higher priority interrupt
8	4,958,378		Method and apparatus for detecting changes in raster data
9	4,794,560		Eraseable self biasing thermal magneto-optic medium
10	4,669,070		Signal format for optical tape record/playback system
11	4,661,941		Optical video or data tape record and playback apparatus
12	4,425,570		Reversible recording medium and information record
13	4,408,213		Reinforced bubble recording medium and information record
14	4,387,381		Optical recording medium and information record with tracking aid
15	4,329,697		Information record
16	4,315,269		Thick protective overcoat layer for optical video disc
17	4,300,227		Replicable optical recording medium
18	4,300,143		Thin protective overcoat layer for optical video disc
19	4,285,056		Replicable optical recording medium
20	4,270,132		Information record
21	4,233,626		Playback information record using phase cancellation for reading
22	4,222,071		Sensitivity information record
23	4,216,501		Optical anti-reflective information record
24	4,195,313		Antireflective information record having an optically passive transparent layer
25	4,195,312		Recorder and antireflective record blank having an optically passive transparent layer
26	4,189,735		Record playback apparatus and information record therefor
27	4,126,150		Photovoltaic device having increased absorption efficiency
28	4,101,907		Overcoat structure for optical video disc
29	4,023,185		Ablative optical recording medium