4. Mineral oils: processes and products
  5. Asphalts, tars, pitches and resins; making, treating and...
  6. Chemical modification of asphalt, tar, pitch or resin

David Charles Trumbore

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Method for reducing hydrogen chloride emissions from an asphalt

Mineral oils: processes and products – Asphalts – tars – pitches and resins; making – treating and... – Chemical modification of asphalt – tar – pitch or resin
Patent

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Method of reducing fumes from a vessel of molten asphalt

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent

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Vacuum treatment of asphalt coating

Coating processes – Solid particles or fibers applied – Roofing produced
Reexamination Certificate

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Profile ID: LFUS-PAI-P-316529

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