| 9896748 |
Low yield ratio dual phase steel linepipe with superior strain aging resistance |
Narasimha-Rao Venkata Bangaru, Hyun-Woo Jin, Adnan Ozekcin, Raghavan Ayer, Douglas P. Fairchild +7 more |
2018-02-20 |
|
| 8691030 |
Low alloy steels with superior corrosion resistance for oil country tubular goods |
Dylan V. Pugh, Joseph C. Bondos, Shiun Ling, Raghavan Ayer, Shalawn K. Jackson +1 more |
2014-04-08 |
$106,351,000 |
| 8141768 |
Application of high integrity welding and repair of metal components in oil and gas exploration, production and refining |
Steven J. Ford, Neeraj S. Thirumalai, James R. Rigby, Mark W. Biegler, Narasimha-Rao Venkata Bangaru +3 more |
2012-03-27 |
$97,503,000 |
| 7807098 |
Advanced erosion-corrosion resistant boride cermets |
Narasimha-Rao Venkata Bangaru, ChangMin Chun, Neeraj S. Thirumalai, Hyun-Woo Jin, John R. Peterson +2 more |
2010-10-05 |
$200,352,000 |
| 7731776 |
Bimodal and multimodal dense boride cermets with superior erosion performance |
ChangMin Chun, Narasimha-Rao Venkata Bangaru, Neeraj S. Thirumalai, Hyun-Woo Jin, John R. Peterson +3 more |
2010-06-08 |
$113,272,000 |
| 7501090 |
Method for protecting metal surfaces utilizing erosion resistant oxide cermets |
Narasimha-Rao Venkata Bangaru, ChangMin Chun, Hyun-Woo Jin, John R. Peterson, Robert Lee Antram +1 more |
2009-03-10 |
$412,496,000 |
| 7438741 |
Erosion-corrosion resistant carbide cermets for long term high temperature service |
Narasimha-Rao Venkata Bangaru, ChangMin Chun, Neeraj S. Thirumalai, Shiun Ling, Hyun-Woo Jin +3 more |
2008-10-21 |
$424,272,000 |
| 7431777 |
Composition gradient cermets and reactive heat treatment process for preparing same |
ChangMin Chun, Narasimha-Rao Venkata Bangaru, Hyun-Woo Jin, John R. Peterson, Robert Lee Antram +1 more |
2008-10-07 |
$419,754,000 |
| 7407082 |
Advanced erosion resistant carbonitride cermets |
ChangMin Chun, Narasimha-Rao Venkata Bangaru, Hyun-Woo Jin, John R. Peterson, Robert Lee Antram +1 more |
2008-08-05 |
$309,947,000 |
| 7384444 |
Advanced erosion-corrosion resistant boride cermets |
Narasimha-Rao Venkata Bangaru, ChangMin Chun, Neeraj S. Thirumalai, Hyun-Woo Jin, John R. Peterson +2 more |
2008-06-10 |
$211,406,000 |
| 7316724 |
Multi-scale cermets for high temperature erosion-corrosion service |
Narasimha-Rao Venkata Bangaru, ChangMin Chun, Hyun-Woo Jin, John R. Peterson, Robert Lee Antram +1 more |
2008-01-08 |
$882,390,000 |
| 7288132 |
Advanced erosion resistant carbide cermets with superior high temperature corrosion resistance |
ChangMin Chun, Narasimha-Rao Venkata Bangaru, Hyun-Woo Jin, John R. Peterson, Robert Lee Antram +1 more |
2007-10-30 |
$187,594,000 |
| 7247186 |
Advanced erosion resistant carbonitride cermets |
ChangMin Chun, Narasimha-Rao Venkata Bangaru, Hyun-Woo Jin, John R. Peterson, Robert Lee Antram +1 more |
2007-07-24 |
$235,038,000 |
| 7175687 |
Advanced erosion-corrosion resistant boride cermets |
Narasimha-Rao Venkata Bangaru, ChangMin Chun, Neeraj S. Thirumalai, Hyun-Woo Jin, John R. Peterson +2 more |
2007-02-13 |
$333,060,000 |
| 7175686 |
Erosion-corrosion resistant nitride cermets |
ChangMin Chun, Narasimha-Rao Venkata Bangaru, Hyun-Woo Jin, John R. Peterson, Robert Lee Antram +1 more |
2007-02-13 |
$333,060,000 |
| 7153338 |
Advanced erosion resistant oxide cermets |
Narasimha-Rao Venkata Bangaru, ChangMin Chun, Hyun-Woo Jin, John R. Peterson, Robert Lee Antram +1 more |
2006-12-26 |
$598,471,000 |
| 7074253 |
Advanced erosion resistant carbide cermets with superior high temperature corrosion resistance |
ChangMin Chun, Narasimha-Rao Venkata Bangaru, Hyun-Woo Jin, John R. Peterson, Robert Lee Antram +1 more |
2006-07-11 |
$164,585,000 |
| 7063752 |
Grain refinement of alloys using magnetic field processing |
Shiun Ling, Michael J. Luton, Hans Thomann, Narasimha-Rao Venkata Bangaru |
2006-06-20 |
$1,352,864,000 |
| 7048810 |
Method of manufacturing hot formed high strength steel |
Clifford W. Petersen, Narasimha-Rao Venkata Bangaru, Michael J. Luton |
2006-05-23 |
$285,401,000 |
| 6565678 |
Weld metals with superior low temperature toughness for joining high strength, low alloy steels |
Douglas P. Fairchild, Narasimha-Rao Venkata Bangaru, Mario L. Macia, Danny L. Beeson, Adnan Ozekcin |
2003-05-20 |
$314,646,000 |
| 6264760 |
Ultra-high strength, weldable steels with excellent ultra-low temperature toughness |
Hiroshi Tamehiro, Hitoshi Asahi, Takuya Hara, Yoshio Terada, Michael J. Luton +2 more |
2001-07-24 |
$389,360,000 |
| 6254698 |
Ultra-high strength ausaged steels with excellent cryogenic temperature toughness and method of making thereof |
Narasimha-Rao Venkata Bangaru, Glen A. Vaughn, Raghavan Ayer |
2001-07-03 |
|
| 6251198 |
Ultra-high strength ausaged steels with excellent cryogenic temperature toughness |
Narasimha-Rao Venkata Bangaru, Glen A. Vaughn |
2001-06-26 |
$396,573,000 |
| 6248191 |
Method for producing ultra-high strength, weldable steels with superior toughness |
Michael J. Luton, Narasimha-Rao Venkata Bangaru, Clifford W. Petersen, Hiroshi Tamehiro, Hitoshi Asahi +2 more |
2001-06-19 |
$480,618,000 |
| 6245290 |
High-tensile-strength steel and method of manufacturing the same |
Narasimha-Rao Venkata Bangaru, Michael J. Luton, Clifford W. Petersen, Kazuki Fujiwara, Shuji Okaguchi +2 more |
2001-06-12 |
$261,619,000 |
