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Official data from INPI

APERFEIÇOAMENTO EM PROCESSO PARA DESSULFURAR FERRO EM FUSÃO

PublicadaInvention Patent

Application data

Number

PI8704435

Type

Invention Patent

Filing

08/27/1987

Publication

09/13/1988

Progress at the INPI

Under appeal
  1. Filing08/27/87
  2. Publication09/13/88
  3. Examination11/27/90
  4. Refused09/06/94
  5. Grant
  6. In force

The application was refused by the INPI on 09/06/1994. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 09/13/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cyanamid Canada Inc

CA

Inventors

A. M. (pessoa física)

CA

A. H. (pessoa física)

CA

B. B. (pessoa física)

CA

W. K. (pessoa física)

CA

Technical data

IPC Classification

Priority claims

CA

529662 · 02/13/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

09/13/1988

RPI 934

Pedido de patente depositado

#2.1

11/17/1987

RPI 891

Indeferimento

#9.2

09/06/1994

RPI 1240

Conhecimento de parecer técnico

#7.1

01/25/1994

RPI 1208

Solicitação de exame técnico

#4.1

11/27/1990

RPI 1043

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