Search for:
Example: "sol gel" AND
polymer*
in
Topic Topic Title Title
Inventor Inventor Patent
Number Patent Number Int. Patent
Classification Int. Patent
Classification Derwent Class Code Derwent
Class Code Derwent Manual Code Derwent
Manual Code Derwent Prim. Access. No.
Derwent Prim. Access. No. Assignee - Name
Only Assignee - Name Only Assignee
Assignee Ring Index Number Derwent Compound No.
Derwent Registry No. DCR Number
AND
OR NOT
Example: Von Oepen R or
Oepen R V
in
Topic Topic Title Title
Inventor Inventor Patent
Number Patent Number Int. Patent
Classification Int. Patent
Classification Derwent Class Code Derwent
Class Code Derwent Manual Code Derwent
Manual Code Derwent Prim. Access. No.
Derwent Prim. Access. No. Assignee - Name
Only Assignee - Name Only Assignee
Assignee Ring Index Number Derwent Compound No.
Derwent Registry No. DCR Number
AND
OR NOT
Example: EP797246 or
US5723945-A
in
Topic Topic Title Title
Inventor Inventor Patent
Number Patent Number Int. Patent
Classification Int. Patent
Classification Derwent Class Code Derwent
Class Code Derwent Manual Code Derwent
Manual Code Derwent Prim. Access. No.
Derwent Prim. Access. No. Assignee - Name
Only Assignee - Name Only Assignee
Assignee Ring Index Number Derwent Compound No.
Derwent Registry No. DCR Number
Add
Another Field >>