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Official data from INPI

APERFEICOAMENTO EM CILINDRO DE ALISAMENTO E APERFEICOAMENTO EM APARELHO E PROCESSO PARA REVESTIR UM VEU DE PAPEL OU DE OUTRO MATERIAL EM FOLHA

Em AnáliseInvention Patent

Application data

Number

PI7601402

Type

Invention Patent

Filing

03/10/1975

Publication

-

Progress at the INPI

  1. Filing03/10/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant07/27/82
  6. Expired08/03/93

The letters patent expired on 08/03/1993: 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: 06/03/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

WIGGINS TEAPE LTD

Inventors

A. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.7

06/03/1986

RPI 815

20.4

05/27/1986

RPI 814

Concessão da patente

#16.1

07/27/1982

RPI 614

Notificação para pagamento de retribuição

#13.1

12/22/1981

RPI 583

Carta-patente expirada

#21.1

08/03/1993

RPI 1183

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