Individual holder
WILLIAMSON INC T
US·18 granted patents·1 pending application·623 citations·filing 1974–2018
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
19 records- 0190US4693278ASafety closure memberWILLIAMSON INC T·Filed 1986·Granted Sep 15, 1987·82 cites·9 claims
- 0285US4953412APipeline caliper pigWILLIAMSON INC T·Filed 1986·Granted Sep 4, 1990·52 cites·15 claims
- 0385US4413370AUnitary pig for use in a pipelineWILLIAMSON INC T·Filed 1981·Granted Nov 8, 1983·50 cites·26 claims
- 0483US4387740ACam-flangeWILLIAMSON INC T·Filed 1981·Granted Jun 14, 1983·57 cites·11 claims
- 0581US4720884ACleaning pig with debris flushing actionWILLIAMSON INC T·Filed 1987·Granted Jan 26, 1988·35 cites·9 claims
- 0681US4515287APressure activated closure lockWILLIAMSON INC T·Filed 1982·Granted May 7, 1985·43 cites·8 claims
- 0777US4457073APipeline pig having improved means of sensing changes in the internal configuration of a pipelineWILLIAMSON INC T·Filed 1982·Granted Jul 3, 1984·29 cites·6 claims
- 0877US4237936APig trap closureWILLIAMSON INC T·Filed 1978·Granted Dec 9, 1980·42 cites·6 claims
- 0976US3940855APipeline pigWILLIAMSON INC T·Filed 1974·Granted Mar 2, 1976·28 cites·10 claims
- 1075US4411459ABranch fitting for providing access to the interior of a pipeWILLIAMSON INC T·Filed 1981·Granted Oct 25, 1983·43 cites·10 claims
- 1172US4579484AUnderwater tapping machineWILLIAMSON INC T·Filed 1982·Granted Apr 1, 1986·29 cites·7 claims
- 1269US4466550AClosure for a cylindrical opening having improved venting meansWILLIAMSON INC T·Filed 1982·Granted Aug 21, 1984·25 cites·4 claims
- 1366US4522063AMethods and apparatus for indicating selected physical parameters in a pipelineWILLIAMSON INC T·Filed 1983·Granted Jun 11, 1985·21 cites·22 claims
- 1465US4609209APrecise alignment adapter flangeWILLIAMSON INC T·Filed 1983·Granted Sep 2, 1986·29 cites·3 claims
- 1561US4797239AFoam pig with textured surfaceWILLIAMSON INC T·Filed 1987·Granted Jan 10, 1989·20 cites·5 claims
- 1653US4780962APipeline bend verification pigWILLIAMSON INC T·Filed 1983·Granted Nov 1, 1988·11 cites·9 claims
- 1747US4058142APipeline fittingWILLIAMSON INC T·Filed 1976·Granted Nov 15, 1977·14 cites·4 claims
- 1844US4596204AFlag-type pig-sigWILLIAMSON INC T·Filed 1985·Granted Jun 24, 1986·13 cites·9 claims
- 1942US2019162700A1System and method for detecting and remediating selective seam weld corrosion in a conduitWILLIAMSON INC T·Filed 2018·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →