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Official data from INPI

PERMUTADOR DE DERIVAÇÃO PARA TRANSFORMADOR

Em AnáliseInvention Patent

Application data

Number

PI8702879

Type

Invention Patent

Filing

06/05/1987

Publication

03/01/1988

Progress at the INPI

  1. Filing06/05/87
  2. Publication03/01/88
  3. Examination10/18/88
  4. Allowance06/02/92
  5. Grant01/26/93
  6. Terminated10/17/95

The patent was granted on 01/26/1993 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: 10/18/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Honeywell Bull Inc

US

Inventors

L. G. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

871.344 · 06/06/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/18/1988

RPI 939

Publicação do pedido de patente

#3.1

03/01/1988

RPI 906

Pedido de patente depositado

#2.1

09/01/1987

RPI 880

Anuidade - prazo legal encerrado

#18.2

10/17/1995

RPI 1298

Concessão da patente

#16.1

01/26/1993

RPI 1156

Notificação para pagamento de retribuição

#13.1

10/20/1992

RPI 1142

Republicação - classificação IPC

#15.11

08/11/1992

RPI 1132

Deferimento

#9.1

06/02/1992

RPI 1122

Retificação

#15.6

03/05/1991

RPI 1057

Retificação

#15.3

10/23/1990

RPI 1038

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