Patent Assignment Details
NOTE:Results display only for issued patents and published applications.
For pending or abandoned applications please consult USPTO staff.
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Reel/Frame: | 005779/0175 | |
| Pages: | 2 |
| | Recorded: | 07/23/1991 | | |
Conveyance: | ASSIGNMENT OF ASSIGNORS INTEREST. |
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Total properties:
1
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Patent #:
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Issue Dt:
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03/31/1992
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Application #:
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07693852
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Filing Dt:
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05/02/1991
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Title:
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PROCESS FOR PURIFYING LEAD USING CALCIUM/SODIUM FILTER CAKE
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Correspondence name and address
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P. MICHAEL WALKER
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C/O E. I. DU PONT DE NEMOURS AND COMPANY
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LEGAL DEPARTMENT - PATENT DIVISION
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WILMINGTON, DE 19898
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