$PTEN Market Cap:
Research Board Inbox Deep Research Not Interested Shortlisted

$PTEN SEC Filings

Filing Filed On
FORM 8-K 06 Feb 2001
FILED PURSUANT TO RULE 425 06 Feb 2001
PROSPECTUS - FILE NO. 333-53336 10 Jan 2001
FORM S-3 08 Jan 2001
FORM 8-K 01 Dec 2000
FORM 8-K 01 Dec 2000
FORM 10-Q FOR QUARTER ENDED SEPTEMBER 30, 2000 14 Nov 2000
FORM 8-K 06 Nov 2000
FORM 8-K 13 Sep 2000
PROSPECTUS SUPPLEMENT 13 Sep 2000
FINAL PROSPECTUS - FILE NO. 333-44932 11 Sep 2000
FORM S-3 31 Aug 2000
FORM 8-K 22 Aug 2000
FORM 8-K 22 Aug 2000
FORM 10-Q FOR QUARTER ENDED JUNE 30, 2000 14 Aug 2000
AMENDMENT NO. 1 TO FORM 10-K - 12/31/99 12 Jun 2000
FORM 10-Q FOR QUARTER ENDED MARCH 31, 2000 15 May 2000
DEFINITIVE PROXY STATEMENT 01 May 2000
FINAL PROSPECTUS 13 Apr 2000
FORM 8-K 04 Apr 2000