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Official data from INPI

PROCESSO PARA A HIDRO-CONVERSAO DE CARGAS DE PETROLEO DE HIDROCARBONETOS PESADOS E CATALISADOR DE HIDRO-CONVERSAO PARA O DITO PROCESSO

ConcedidaInvention Patent

Application data

Number

PI7704090

Type

Invention Patent

Filing

07/02/1976

Publication

-

Progress at the INPI

  1. Filing07/02/76
  2. Publication
  3. Examination
  4. Allowance03/11/86
  5. Grant09/30/86
  6. Expired09/21/93

The letters patent expired on 09/21/1993: 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: 09/30/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

EXXON RESEARCH ENGINEERING CO

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Inventors

A. C. (pessoa física)

B. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/30/1986

RPI 832

Notificação para pagamento de retribuição

#13.1

07/01/1986

RPI 819

Deferimento

#9.1

03/11/1986

RPI 803

Exigência - art. 36 da LPI

#6.1

07/23/1985

RPI 770

15.0

11/17/1981

RPI 578

Conhecimento de parecer técnico

#7.1

10/06/1981

RPI 572

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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