Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12285824 | Methods of welding high manganese steel with step-out weld zone erosion-corrosion resistance | HyunWoo Jin, Ning Ma, Andrew J. Wasson, Douglas P. Fairchild, IIWook Han +3 more | 2025-04-29 |
| 11883906 | High manganese steel pipe with step-out weld zone erosion-corrosion resistance and method of making the same | HyunWoo Jin, Ning Ma, Andrew J. Wasson, Douglas P. Fairchild, IIWook Han +3 more | 2024-01-30 |
| 11364705 | Diamond-like-carbon based friction reducing tapes | Lei Wang, Jeffrey R. Bailey, Srinivasan Rajagopalan, Mehmet Deniz Ertas, Erika A. O. Biediger | 2022-06-21 |
| 10493570 | High manganese steel pipe with step-out weld zone erosion-corrosion resistance and method of making the same | HyunWoo Jin, Ning Ma, Andrew J. Wasson, Douglas P. Fairchild, IlWook Han +3 more | 2019-12-03 |
| 9896748 | Low yield ratio dual phase steel linepipe with superior strain aging resistance | Jayoung Koo, Narasimha-Rao Venkata Bangaru, Hyun-Woo Jin, Raghavan Ayer, Douglas P. Fairchild +7 more | 2018-02-20 |
| 9821401 | High toughness weld metals with superior ductile tearing resistance | Douglas P. Fairchild, Mario L. Macia, Steven J. Ford, Nathan E. Nissley, Raghavan Ayer +1 more | 2017-11-21 |
| 9617654 | Low friction coatings with improved abrasion and wear properties and methods of making | Srinivasan Rajagopalan, Tabassumul Haque, Mehmet Deniz Ertas, HyunWoo Jin, Bo Zhao | 2017-04-11 |
| 8602113 | Coated oil and gas well production devices | Hyun-Woo Jin, Srinivasan Rajagopalan, Tabassumul Haque, Mehmet Deniz Ertas, Bo Zhao +2 more | 2013-12-10 |
| 8590627 | Coated sleeved oil and gas well production devices | Hyun-Woo Jin, Srinivasan Rajagopalan, Tabassumul Haque, Mehmet Deniz Ertas, Bo Zhao +2 more | 2013-11-26 |
| 8561707 | Ultra-low friction coatings for drill stem assemblies | Hyun-Woo Jin, Srinivasan Rajagopalan, Tabassumul Haque, Mehmet Deniz Ertas, Bo Zhao +2 more | 2013-10-22 |
| 8286715 | Coated sleeved oil and gas well production devices | Jeffrey R. Bailey, Erika Ann Ooten Biediger, Narasimha-Rao Venkata Bangaru, Hyun-Woo Jin, Mehmet Deniz Ertas +5 more | 2012-10-16 |
| 8261841 | Coated oil and gas well production devices | Jeffrey R. Bailey, Erika Ann Ooten Biediger, Narasimha-Rao Venkata Bangaru, Hyun-Woo Jin, Charles S. Yeh +3 more | 2012-09-11 |
| 8220563 | Ultra-low friction coatings for drill stem assemblies | Narasimha-Rao Venkata Bangaru, Hyun-Woo Jin, Erika Ann Ooten Biediger, Jeffrey R. Bailey, Vishwas Gupta +2 more | 2012-07-17 |
| 6942739 | Reactive heat treatment to form pearlite from an iron containing article | ChangMin Chun, Trikur A. Ramanarayanan, James Dirickson Mumford | 2005-09-13 |
| 6565678 | Weld metals with superior low temperature toughness for joining high strength, low alloy steels | Douglas P. Fairchild, Jayoung Koo, Narasimha-Rao Venkata Bangaru, Mario L. Macia, Danny L. Beeson | 2003-05-20 |
| 5869195 | Corrosion resistant carbon steel | Trikur A. Ramanarayanan | 1999-02-09 |
| 5520751 | Oxidation of low chromium steels | Vinod Kumar Pareek, Trikur A. Ramanarayanan, James Dirickson Mumford | 1996-05-28 |