Resist stripping process

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6440647
SERIAL NO

09678465

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A process for removing patterned negative working resist from the surface of a substrate during manufacture of printed wiring boards is disclosed. The process includes the steps of contacting the patterned resist with a stripping solution containing an alkalinity source as well as a source of ammonium ions. The stripping solution is characterized in that it does not contain volatile organic compounds (VOCs).

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Patent Owner(s)

Patent OwnerAddress
ALPHA METALS INC109 CORPORATE BOULEVARD SOUTH PLAINFIELD NJ 07080

International Classification(s)

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  • 2000 Application Filing Year
  • G03F Class
  • 1038 Applications Filed
  • 460 Patents Issued To-Date
  • 44.32 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2000200120022003200420052006200720082009201020110255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Yakobson, Eric Aliso Viejo, CA 26 208

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Patent Citation Ranking

  • 10 Citation Count
  • G03F Class
  • 1.72 % this patent is cited more than
  • 23 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges2443318364221101 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8091 - 100100 +02.557.51012.51517.52022.52527.53032.53537.54042.54547.5

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