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Official data from INPI

PROCESSO PARA PREPARAR UMA COMPOSIÇÃO DE CATALISADOR DE CRAQUEAMENTO E PROCESSO PARA CRAQUEAMENTO CATALÍTICO

ConcedidaInvention Patent

Application data

Number

PI7903584

Type

Invention Patent

Filing

06/06/1979

Publication

-

Progress at the INPI

  1. Filing06/06/79
  2. Publication
  3. Examination01/05/82
  4. Allowance06/11/85
  5. Grant08/29/89
  6. Expired04/04/95

The letters patent expired on 04/04/1995: 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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxon Research And Engineering Company

US

See this company's full portfolio

Inventors

E. G. (pessoa física)

US

W. J. (pessoa física)

US

W. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

913,480 · 06/07/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

05/23/1989

RPI 970

110

03/14/1989

RPI 960

Recurso

#12.1

09/24/1985

RPI 779

Deferimento

#9.1

06/11/1985

RPI 764

Exigência - art. 36 da LPI

#6.1

10/23/1984

RPI 731

Exigência - art. 36 da LPI

#6.1

02/14/1984

RPI 695

6.2

08/10/1982

RPI 616

Pedido de certificado de adição de invenção

#5.1

06/01/1982

RPI 606

Solicitação de exame técnico

#4.1

01/05/1982

RPI 585

Carta-patente expirada

#21.1

04/04/1995

RPI 1270

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