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Official data from INPI

Processo para preparar um zeólito; zeólito; composição para catalisador; catalisador; e processo para craqueamento catalítico de hidrocarbonetos.

ConcedidaInvention Patent

Application data

Number

PI8104420

Type

Invention Patent

Filing

07/10/1981

Publication

08/31/1982

Progress at the INPI

  1. Filing07/10/81
  2. Publication08/31/82
  3. Examination08/07/84
  4. Allowance12/16/86
  5. Grant09/27/88
  6. Terminated09/25/90

The patent was granted on 09/27/1988 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W.R. Grace & Co.

US

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Inventors

C. L. (pessoa física)

Technical data

IPC Classification

Priority claims

US

201.616 · 10/18/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/27/1988

RPI 936

Notificação para pagamento de retribuição

#13.1

07/12/1988

RPI 925

110

04/05/1988

RPI 911

Recurso

#12.1

03/24/1987

RPI 857

Deferimento

#9.1

12/16/1986

RPI 843

Exigência - art. 36 da LPI

#6.1

04/15/1986

RPI 808

Conhecimento de parecer técnico

#7.1

04/23/1985

RPI 757

Pedido de certificado de adição de invenção

#5.1

12/26/1984

RPI 740

Solicitação de exame técnico

#4.1

08/07/1984

RPI 720

Publicação do pedido de patente

#3.1

08/31/1982

RPI 619

Anuidade - prazo legal encerrado

#18.2

09/25/1990

RPI 1034

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