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Official data from INPI

PROCESSO PARA CONVERTER GÁS DE SÍNTESE EM DIMETILÉTER

ConcedidaInvention Patent

Application data

Number

PI8103339

Type

Invention Patent

Filing

05/28/1981

Publication

01/04/1983

Progress at the INPI

  1. Filing05/28/81
  2. Publication01/04/83
  3. Examination11/20/84
  4. Allowance10/14/86
  5. Grant05/31/88
  6. Terminated02/04/92

The patent was granted on 05/31/1988 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: 05/31/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. C. (pessoa física)

US

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Inventors

B. K. (pessoa física)

C. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1988

RPI 919

110

02/17/1988

RPI 904

Recurso

#12.1

06/30/1987

RPI 871

11.8

04/14/1987

RPI 860

Retificação

#15.3

02/17/1987

RPI 852

Deferimento

#9.1

10/14/1986

RPI 834

8.1

08/26/1986

RPI 827

Exigência - art. 36 da LPI

#6.1

11/26/1985

RPI 788

Pedido de certificado de adição de invenção

#5.1

04/09/1985

RPI 755

Solicitação de exame técnico

#4.1

11/20/1984

RPI 735

Publicação do pedido de patente

#3.1

01/04/1983

RPI 637

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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