William A. Valka has been granted 11 US patents while listed as an inventor at Fmc . The first was granted in 1981 and the most recent in May 2002. William A. Valka ranks #435,149 of 4,157,543 US inventors in our database (top 10.5%). Patent records list William A. Valka in Spring, TX, US.
Patents per Year Patents granted per year, 1981 to 2002 Bar chart with a peak of 3 patents in 1992. peak 3 1981: 2 patents 1981 1984: 1 patents 1984 1990: 1 patents 1990 1991: 1 patents 1991 1992: 3 patents 1992 1993: 1 patents 1993 1994: 1 patents 1994 2002: 1 patents 2002
Issued Patents All Time
Profile Widget
Showing 1–11 of 11 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
6386291 Subsea wellhead system and method for drilling shallow water flow formations David E. Short 2002-05-14
5299643 Dual radially locked subsea housing Vincent H. Vetter , Shiva P. Singeetham , Michael R. Williams 1994-04-05
$1,906,000
5259459 Subsea wellhead tieback connector — 1993-11-09
$1,795,000
5107931 Temporary abandonment cap and tool Randy J. Wester 1992-04-28
5105888 Well casing hanger and packoff running and retrieval tool J. Roark Pollock 1992-04-21
5088556 Subsea well guide base running tool David E. Short 1992-02-18
$3,080,000
5069287 Retrievable guide base for subsea well David E. Short , Arthur G. Ahlstone 1991-12-03
$3,356,000
4969517 Sub-mudling casing hanger/packoff Glen C. Wieland 1990-11-13
$2,154,000
4438817 Subsea well with retrievable piping deck Roger L. Pokladnik 1984-03-27
$4,942,000
4300637 Tool for remotely determining the position of a device in an underwater well assembly — 1981-11-17
$4,546,000
4300750 Position indicating valves Steven A. Porter 1981-11-17
$4,546,000
