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Hercules Inc |
Polyamine-acrylamide-polyaldehyde resins having utility as wet and dry strengthening agents in papermaking
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Secondary oil recovery process
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1972-06-09 |
1979-05-01 |
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Calgon Corporation |
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1980-01-28 |
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Microporous film with polymer in pores for regulating passage of fluid
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Marathon Oil Company |
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Permeability contrast correction employing propionate-sequestered chromium(III) prepared by nitrite/dichromate redox
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1986-01-27 |
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