Inventor
Sigifredo Alvarado
Inventor
Marrero, LA, US
Overview
Patents· 1 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling100%
PatentTitleYear
8,074,722'Method for securing a damaged wellhead'2011Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2011Patents assigned to ALVARADO SIGIFREDO (1)· patent assignee history
2011Patents assigned to GILBERT RONALD C (1)· patent assignee history
2011Patents assigned to MURPHY JR JOHN M (1)· patent assignee history
2011Patents assigned to VETCO GRAY INC (1)· patent assignee history
2011Based in Marrero, LA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ALVARADO SIGIFREDOself | 1 | 2011 |
| GILBERT RONALD C | 1 | 2011 |
| MURPHY JR JOHN M | 1 | 2011 |
| VETCO GRAY INC | 1 | 2011 |
Locations
| Location | Patents | Span |
|---|---|---|
| Marrero, LA, US | 1 | 2011 |