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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

PI7608232

Type

Invention Patent

Filing

12/08/1976

Publication

-

Progress at the INPI

  1. Filing12/08/76
  2. Publication
  3. Examination
  4. Allowance
  5. Grant09/27/83
  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

04/10/1984

RPI 703

Concessão da patente

#16.1

09/27/1983

RPI 675

Notificação para pagamento de retribuição

#13.1

05/17/1983

RPI 656

110

01/25/1983

RPI 640

Recurso

#12.1

12/22/1981

RPI 583

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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