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Official data from INPI

APARELHO E PROCESSO PARA USO NA FABRICACAO DE UM GRAMPO DE FIXACAO DE TRILHO FERROVIARIO,BEM COMO INSTALACAO E OPERACAO

ConcedidaInvention Patent
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Application data

Number

PI7805311

Type

Invention Patent

Filing

08/17/1978

Publication

-
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Progress at the INPI

  1. Filing08/17/78
  2. Publication
  3. Examination04/13/82
  4. Allowance07/09/85
  5. Grant02/04/86
  6. Expired05/03/94

The letters patent expired on 05/03/1994: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 02/04/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PANDROL LTD

Inventors

C. P. (pessoa física)

W. C. (pessoa física)

Technical data

IPC Classification

E01B 9/60

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/04/1986

RPI 798

Notificação para pagamento de retribuição

#13.1

11/12/1985

RPI 786

Deferimento

#9.1

07/09/1985

RPI 768

Exigência - art. 36 da LPI

#6.1

10/23/1984

RPI 731

Republicação - classificação IPC

#15.11

03/13/1984

RPI 699

Exigência - art. 36 da LPI

#6.1

02/14/1984

RPI 695

Solicitação de exame técnico

#4.1

04/13/1982

RPI 599

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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