Growing community of inventors

Los Angeles, CA, United States of America

Warren N Lieberfarb

Average Co-Inventor Count = 3.00

ph-index = 11

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 887

Warren N LieberfarbChristopher J Cookson (25 patents)Warren N LieberfarbLewis S Ostrover (24 patents)Warren N LieberfarbLewis S Ostroyer (1 patent)Warren N LieberfarbWarren N Lieberfarb (25 patents)Christopher J CooksonChristopher J Cookson (70 patents)Lewis S OstroverLewis S Ostrover (90 patents)Lewis S OstroyerLewis S Ostroyer (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Time Warner Entertainment Company, L.p. (19 from 64 patents)

2. Warner Home Video Inc. (3 from 3 patents)

3. Other (1 from 832,880 patents)

4. Telectronics Pacing Systems, Inc. (1 from 93 patents)

5. Warner Bros. Home Enterteinment Inc. (1 from 1 patent)


25 patents:

1. 7190880 - Player and disc system for producing video signals in different formats

2. 7103269 - System of multiple players generating outputs of different formats from identical discs

3. 7085479 - Optical disc player for playing a disc in a selected format

4. 7043145 - Method of distributing multimedia presentations in different formats on optical discs

5. 6771888 - Data structure for allowing play of a video program in multiple aspect ratios

6. 6553176 - Data structure for representing two or more versions of program material

7. 6526221 - Data structure representing both program and command data

8. 6487365 - Data structure for representing a program containing components organized in a series of data blocks

9. 6442335 - Data structure for audio signals that can be mixed and/or switched

10. 6424794 - Data structure for representing a program containing components organized in a series of data blocks

11. 6418271 - Data structure for representing video program subtitles

12. 6411772 - Data structure for distinguishing data of authorized and unauthorized publishers

13. 6408129 - Method for processing a plurality of synchronized audio tracks, including phase inversion of a selected track

14. 6148139 - Software carrier with operating commands embedded in data blocks

15. 6115534 - Software carrier whose play can be controlled by the software publisher

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