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Official data from INPI

PIGMENTO INORGANICO DE ESPINELIO MULTIPLO,E PROCESSO PARA SUA PREPARACAO

ConcedidaInvention Patent

Application data

Number

PI7705228

Type

Invention Patent

Filing

08/20/1976

Publication

-

Progress at the INPI

  1. Filing08/20/76
  2. Publication
  3. Examination
  4. Allowance11/16/82
  5. Grant06/28/83
  6. Expired07/13/93

The letters patent expired on 07/13/1993: 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: 06/28/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

FERRO CORP

Inventors

N. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1983

RPI 662

Notificação para pagamento de retribuição

#13.1

03/22/1983

RPI 648

Deferimento

#9.1

11/16/1982

RPI 630

Exigência - art. 36 da LPI

#6.1

04/13/1982

RPI 599

Carta-patente expirada

#21.1

07/13/1993

RPI 1180

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