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Official data from INPI

PROCESSO DE PREPARACAO DE COMPOSICAO CATALITICA;COMPOSICAO CATALITICA E PROCESSO DE TRATAMENTO DE GASES DE DESCARGA

ConcedidaInvention Patent

Application data

Number

PI7800094

Type

Invention Patent

Filing

01/06/1977

Publication

-

Progress at the INPI

  1. Filing01/06/77
  2. Publication
  3. Examination
  4. Allowance01/15/85
  5. Grant07/30/85
  6. Expired07/20/93

The letters patent expired on 07/20/1993: 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: 07/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ENGELHARD MIN & CHEM

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Inventors

B. D. (pessoa física)

K. C. (pessoa física)

K. R. (pessoa física)

M. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/30/1985

RPI 771

Notificação para pagamento de retribuição

#13.1

05/07/1985

RPI 759

Deferimento

#9.1

01/15/1985

RPI 743

Exigência - art. 36 da LPI

#6.1

01/10/1984

RPI 690

Exigência - art. 36 da LPI

#6.1

01/11/1983

RPI 638

14.1

10/26/1982

RPI 627

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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