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Official data from INPI

APERFEICOAMENTO EM DISCOS PARA REFINADORAS DE POLPA PARA PAPEL E SIMILARES

Em AnáliseInvention Patent

Application data

Number

PI7608233

Type

Invention Patent

Filing

12/08/1976

Publication

-

Progress at the INPI

  1. Filing12/08/76
  2. Publication
  3. Examination
  4. Allowance
  5. Grant06/28/83
  6. Expired07/27/93

The letters patent expired on 07/27/1993: 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: 07/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

INOX IND COM DE ACO SA

Inventors

S. F. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.7

07/28/1987

RPI 875

20.4

12/06/1983

RPI 685

Concessão da patente

#16.1

06/28/1983

RPI 662

Notificação para pagamento de retribuição

#13.1

04/05/1983

RPI 650

110

12/21/1982

RPI 635

Recurso

#12.1

10/27/1981

RPI 575

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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