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Official data from INPI

CATALISADOR PARA A PRODUCAO DE ETILENO PELA DESIDRATACAO DE ETANOL

ConcedidaInvention Patent

Application data

Number

PI8003367

Type

Invention Patent

Filing

05/31/1979

Publication

-

Progress at the INPI

  1. Filing05/31/79
  2. Publication
  3. Examination
  4. Allowance09/10/85
  5. Grant02/03/87
  6. Expired06/13/95

The letters patent expired on 06/13/1995: 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: 02/03/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NIKKI CHEM CO LTD

Inventors

M. K. (pessoa física)

T. A. (pessoa física)

Y. A. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/03/1987

RPI 850

110

08/26/1986

RPI 827

Recurso

#12.1

12/10/1985

RPI 790

Deferimento

#9.1

09/10/1985

RPI 777

Exigência - art. 36 da LPI

#6.1

11/13/1984

RPI 734

Exigência - art. 36 da LPI

#6.1

02/14/1984

RPI 695

6.2

11/16/1982

RPI 630

Pedido de certificado de adição de invenção

#5.1

03/30/1982

RPI 597

Carta-patente expirada

#21.1

06/13/1995

RPI 1280

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