Patent Research | ELECTRONICS CIRCUITS AND COMPONENTS - NATIONAL SEMICONDUCTOR
  • AOP Code: NSM 440
  • Exp: 01/29/09
  • Categories: Technology
  • Industry: Manufacturing & Engineering
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ELECTRONICS CIRCUITS AND COMPONENTS - NATIONAL SEMICONDUCTOR


These patents relate to different types of circuits or components used in integrated circuits, microelectronic circuits, processors or computers.

Guideline Patent Number: US 5,239,440  

Latest Date for Prior Art: December 31, 2069  

Guideline Patent Filing Date: September 30, 1996 | Owner(s): National Semiconductor Corporation

Interested Parties: LSI Corporation

Multiple Patent Study Description:

This Study is for 4 patents. They are US 5,239,440; US 5,473,283, US 5,646,563, and US 5,170,470. National Semiconductor has also asserted US Patent No. 4,567,058 which expired in 2003.

Description:

All of these patents have been asserted in one lawsuit. US 5,239,440 relates to protection circuits used to “shunt” electrostatic discharge away from functioning circuitry so as to not disrupt the operation of the functioning circuitry. US 5,473,283 relates to charge pump circuits, and in particular, to charge pump circuits using metal oxide semiconductor field effect transistors (MOSFETs). US 5,646,563 relates to charge pumps which supply closely matched up and down current pulses. US 5,170,470 relates to modems that enable data to be transferred between computers by means of telephone lines or other communication links.

This is a Multiple Patent Study

You can view the included patents below:
Patent #: US 5,239,440 (View Details| PDF| Word)
Patent #: US 5,473,283 (View Details| PDF| Word)
Patent #: US 5,646,563 (View Details| PDF| Word)
Patent #: US 5,170,470 (View Details| PDF| Word)

Requirements to Match   :

See the claims contained in the downloadable copies of the patents.

All references need to have been published on or before this date. Any references published after the LDPA will be automatically declined.

Specific claims or technical disclosures on which the scope of the Study is based. Your submissions should be based on these requirements.