| Serial Number | 72370562 |
| Word Mark | RHE CON O |
| Filing Date | Monday, September 14, 1970 |
| Status | 900 - EXPIRED |
| Status Date | Saturday, May 3, 2003 |
| Registration Number | 0939353 |
| Registration Date | Tuesday, August 1, 1972 |
| Mark Drawing | 3S11 - Illustration: Drawing or design which also includes word(s) / letter(s) / number(s) |
| Published for Opposition Date | NOT AVAILABLE |
| Goods and Services | LIGNOSULPHONATE MUD THINNER AND CONDITIONER FOR USE IN DRILLING |
| Pseudo Mark | RHEOCON |
| International Class | 001 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry; unprocessed artificial resins; unprocessed plastics; manures; fire extinguishing compositions; tempering and soldering preparations; chemical substances for preserving foodstuffs; tanning substances; adhesives used in industry. |
| US Class Codes | 006 |
| Class Status Code | 9 - Expired |
| Class Status Date | Saturday, May 3, 2003 |
| Primary Code | 006 |
| First Use Anywhere Date | Thursday, November 18, 1965 |
| First Use In Commerce Date | Thursday, November 18, 1965 |
| Party Name | M-I DRILLING FLUIDS COMPANY |
| Party Type | 40 - New Owner After Registration |
| Legal Entity Type | 02 - Partnership |
| Address | HOUSTON, TX 77242 |
| Party Name | DRESSER INDUSTRIES, INC. |
| Party Type | 30 - Original Registrant |
| Legal Entity Type | 03 - Corporation |
| Address | DALLAS, TX 75221 |
| Event Date | Event Description |
| Saturday, May 3, 2003 | CANCELLED SEC. 8 (10-YR)/EXPIRED SECTION 9 |
| Tuesday, September 15, 1992 | REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS) |
| Monday, July 27, 1992 | REGISTERED - SEC. 9 FILED/CHECK RECORD FOR SEC. 8 |
| Tuesday, January 30, 1979 | REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK. |