Robert E Hefner Jr
Inventor
Stats
- 181 US patents issued
- 181 US Applications filed
- most recent filing
This is official USPTO record data
Details
- 181 US Patents Issued
- 181 US Applications Filed
- 1128 Total Citation Count
- Apr 1, 2004 Most Recent Filing
- Sep 28, 1978 Earliest Filing
Work History
| Patent Owner | Applications Filed | Year |
|---|---|---|
| DOW GLOBAL TECHNOLOGIES INC. | 1
1 | 1986
2000 |
| WEATHERFORD U.S., INC. | 1
| 1995
|
| MICHIGAN MOLECULAR INSTITUTE | 1
2 1 | 1995
1996 1997 |
| THE DOW CHEMICAL COMPANY | 1
4 2 7 12 7 12 23 18 9 5 6 6 5 18 15 13 9 1 1 | 1978
1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 2000 2001 |
| CHEMTECH ROYALTY ASSOCIATES, L.P. | 1
| 1986
|
| DOW GLOBAL TECHNOLOGIES LLC | 1
| 2004
|
| ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC | 1
| 1986
|
Inventor Addresses
| Address | Duration |
|---|---|
| Freeport, TX | Dec 04, 84 - Dec 04, 84 |
| Jackson, TX | Apr 17, 84 - Apr 17, 84 |
| Lake Jackson, TX | Mar 03, 81 - Jun 03, 08 |
| Midland, MI | Nov 18, 80 - Nov 17, 81 |
Technology Profile
| Technology | Matters | |
|---|---|---|
| B03B: | SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS | 1 |
| B03D: | FLOTATION; DIFFERENTIAL SEDIMENTATION | 9 |
| B32B: | LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM | 1 |
Patents / Publication
| Patents / Publication # | Year of Publication / Issued | Title | Citations |
|---|---|---|---|
| 7381850 | 2008 | Multifunctional unsymmetrically substituted monomers and polyarylene compositions therefrom | 2 |
| 6613849 | 2003 | Epoxy (urethane) (Meth)acrylate from hydroxyaliphatic bisphenol epoxy resin | 2 |
| 6365788 | 2002 | Preparation of 1,2-bis(4-hydroxyphenyl)-2-hydroxypropanes | 0 |
| 6353079 | 2002 | Epoxy resin and epoxy di (meth)acrylate from hydroxyaliphatic bisphenol | 4 |
| 5874645 | 1999 | Process for the preparation and purification of 4,4'-dihydroxy-alpha-substituted stilbene | 0 |
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