G-P GYPSUM CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE 156

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7182878 Methods for etch loading planar lightwave circuitsFeb 06, 04Feb 27, 07[B29D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5791109 Gypsum board and finishing system containing sameExpiredNov 06, 96Aug 11, 98[E04C]
5198052 Method of reshaping a gypsum board core and products made by sameExpiredOct 22, 90Mar 30, 93[B32B]
4818287 Fiber reinforced plaster molds for metal castingExpiredSep 07, 84Apr 04, 89[B22C]
4810569 Fibrous mat-faced gypsum boardExpiredMar 02, 87Mar 07, 89[B32B]
4748771 Fire doorExpiredJul 30, 85Jun 07, 88[E05D]
4722866 Fire resistant gypsum boardExpiredMay 04, 87Feb 02, 88[C09D, B27N, B32B]
4695494 Fire-resistant article and method of manufactureExpiredNov 25, 86Sep 22, 87[B28B, E04B, B32B]
4664707 Fire resistant gypsum compositionExpiredApr 09, 85May 12, 87[C09D]
4647496 Use of fibrous mat-faced gypsum board in exterior finishing systems for buildingsExpiredFeb 27, 84Mar 03, 87[B32B]
4398673 Method of classifying and comminuting a gypsum ore or the likeExpiredNov 24, 80Aug 16, 83[B02C]
4343127 Fire doorExpiredJan 15, 81Aug 10, 82[E04B]
4287103 Joint composition including starchExpiredFeb 11, 80Sep 01, 81[C08L]

Top Inventors for This Owner

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