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Official data from INPI

MECANISMO DE DIFERENCIAL

ConcedidaInvention Patent

Application data

Number

PI8205101

Type

Invention Patent

Filing

11/10/1981

Publication

08/09/1983

Progress at the INPI

  1. Filing11/10/81
  2. Publication08/09/83
  3. Examination08/20/85
  4. Allowance06/09/87
  5. Grant12/29/87
  6. Terminated06/26/90

The patent was granted on 12/29/1987 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TRACTECH INC [US]

Inventors

D. L. (pessoa física)

N. T. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/29/1987

RPI 897

Notificação para pagamento de retribuição

#13.1

09/29/1987

RPI 884

Deferimento

#9.1

06/09/1987

RPI 868

Exigência - art. 36 da LPI

#6.1

06/24/1986

RPI 818

Solicitação de exame técnico

#4.1

08/20/1985

RPI 774

Publicação do pedido de patente

#3.1

08/09/1983

RPI 668

Pedido de patente depositado

#2.1

10/19/1982

RPI 626

Anuidade - prazo legal encerrado

#18.2

06/26/1990

RPI 1024

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