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Official data from INPI

PROCESSO PARA A CONVERSAO DE UMA CARGA DE DESTILADO DE PETROLEO CONTENDO COMPOSTOS,DE MERCAPTANA,OLEFINICOS E DIENICOS

ConcedidaInvention Patent

Application data

Number

PI7603780

Type

Invention Patent

Filing

06/12/1975

Publication

-

Progress at the INPI

  1. Filing06/12/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant07/26/83
  6. Expired08/03/93

The letters patent expired on 08/03/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 07/26/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

UOP INC

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Inventors

C. D. (pessoa física)

U. P. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/26/1983

RPI 666

110

05/03/1983

RPI 654

Recurso

#12.1

11/17/1981

RPI 578

Carta-patente expirada

#21.1

08/03/1993

RPI 1183

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