Inventor
Longchun Cheng
Inventor
Hopewell Township, Mercer County, NJ, US
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C23Fprimary
C23FNon-mechanical removal of metallic material from surface31%
C09KMaterials for miscellaneous applications, not provided for elsewhere19%
C23GCleaning or de-greasing of metallic material by chemical methods other than electrolysis13%
B01DSeparation6%
C02FTreatment of water, waste water, sewage, or sludge6%
C07DHeterocyclic compounds6%
D21CProduction of cellulose by removing non-cellulose substances from cellulose-containing materials6%
D21HPulp compositions6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
PatentTitleYear
7,316,787'Methods for controlling silica scale in aqueous systems'20086,585,933'Method and composition for inhibiting corrosion in aqueous systems'20036,464,901'Halogen resistant copper corrosion inhibitors'20026,187,262'Inhibition of corrosion in aqueous systems'20016,103,144'Halogen resistant copper corrosion inhibitors'20005,968,408'Methods of inhibiting corrosion using isomers of chloro-methylbenzotriazole'1999Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1999–2003Patents assigned to BETZDEARBORN INC (4)· patent assignee history
1999Based in Hopewell, NJ, US· patent location history
2000–2003Based in Hopewell Township, Mercer County, NJ, US· patent location history
2008Patents assigned to GEN ELECTRIC (1)· patent assignee history
2008Based in Pennington, NJ, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BETZDEARBORN INC | 4 | 1999–2003 |
| GEN ELECTRIC | 1 | 2008 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hopewell Township, Mercer County, New Jersey, US | 4 | 2000–2003 |
| Pennington, New Jersey, US | 1 | 2008 |
| Hopewell, New Jersey, US | 1 | 1999 |