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Official data from INPI

SISTEMA DE ELEVADOR A TRAÇÃO

Em AnáliseInvention Patent

Application data

Number

PI8504331

Type

Invention Patent

Filing

09/09/1985

Publication

07/08/1986

Progress at the INPI

  1. Filing09/09/85
  2. Publication07/08/86
  3. Examination08/02/88
  4. Allowance01/28/92
  5. Grant10/27/92
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 08/02/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. C. (pessoa física)

US

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Inventors

I. K. (pessoa física)

US

P. T. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

649.460 · 09/11/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

08/02/1988

RPI 928

Publicação do pedido de patente

#3.1

07/08/1986

RPI 820

Pedido de patente depositado

#2.1

10/29/1985

RPI 784

Carta-patente expirada

#21.1

Patente extinta em 09/09/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

10/27/1992

RPI 1143

Notificação para pagamento de retribuição

#13.1

06/09/1992

RPI 1123

Deferimento

#9.1

01/28/1992

RPI 1104

Exigência - art. 36 da LPI

#6.1

01/08/1991

RPI 1049

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