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Official data from INPI

PROCESSO DE CRAQUEAMENTO DE CATALISADOR EM LEITO FLUIDO PROCESSO PARA REMOCAO DE OXIDO DE ENXOFRE DE UMA CORRENTE DE MISTURA GASOSA E COMPOSICAO DE MATERIA

ConcedidaInvention Patent

Application data

Number

PI7701503

Type

Invention Patent

Filing

03/11/1976

Publication

-

Progress at the INPI

  1. Filing03/11/76
  2. Publication
  3. Examination
  4. Allowance04/29/86
  5. Grant11/25/86
  6. Expired09/21/93

The letters patent expired on 09/21/1993: 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: 11/25/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. R. (pessoa física)

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Inventors

B. W. (pessoa física)

F. R. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/25/1986

RPI 840

Notificação para pagamento de retribuição

#13.1

09/02/1986

RPI 828

Deferimento

#9.1

04/29/1986

RPI 810

8.1

12/31/1985

RPI 793

Exigência - art. 36 da LPI

#6.1

02/20/1985

RPI 748

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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