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Official data from INPI

APERFEIÇOAMENTO EM UM CONJUNTO DE ROLETES DE CARGA PARA CORREIAS TRANSPORTADORAS

Em AnáliseInvention Patent

Application data

Number

PI7701724

Type

Invention Patent

Filing

03/18/1977

Publication

-

Progress at the INPI

  1. Filing03/18/77
  2. Publication
  3. Examination
  4. Allowance11/17/81
  5. Grant08/31/82
  6. Expired09/21/93

The letters patent expired on 09/21/1993: 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: 08/12/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Fábrica de Aço Paulista S.A

SP, BR

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Inventors

N. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

08/12/1986

RPI 825

20.7

08/12/1986

RPI 825

Pedido de licença compulsória

#20.1

07/29/1986

RPI 823

Concessão da patente

#16.1

08/31/1982

RPI 619

Notificação para pagamento de retribuição

#13.1

03/23/1982

RPI 596

Deferimento

#9.1

11/17/1981

RPI 578

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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