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Official data from INPI

COMPOSICAO CATALITICA,RESPECTIVO PROCESSO DE PRODUCAO E PROCESSO DE CONVERSAO SIMULTANEA DOS COMPONENTES DE UMA CORRENTE GASOSA

ConcedidaInvention Patent

Application data

Number

PI7806268

Type

Invention Patent

Filing

09/23/1977

Publication

-

Progress at the INPI

  1. Filing09/23/77
  2. Publication
  3. Examination
  4. Allowance
  5. Grant10/29/85
  6. Expired05/03/94

The letters patent expired on 05/03/1994: 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: 10/29/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ENGELHARD MIN & CHEM

See this company's full portfolio

Inventors

K. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/29/1985

RPI 784

Notificação para pagamento de retribuição

#13.1

07/02/1985

RPI 767

Indeferimento

#9.2

03/05/1985

RPI 750

Exigência - art. 36 da LPI

#6.1

02/07/1984

RPI 694

14.11

11/30/1982

RPI 632

14.1

10/05/1982

RPI 624

6.2

11/17/1981

RPI 578

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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