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Official data from INPI

SENSOR DE DIFERENCA ENTRE TENSOES

Em AnáliseInvention Patent

Application data

Number

PI7806806

Type

Invention Patent

Filing

10/16/1978

Publication

-

Progress at the INPI

  1. Filing10/16/78
  2. Publication
  3. Examination
  4. Allowance11/17/81
  5. Grant07/27/82
  6. Terminated01/28/92

The patent was granted on 07/27/1982 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: 07/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PEXTRON IND ELETRONICA LTD

Inventors

G. P. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

07/12/1988

RPI 925

Concessão da patente

#16.1

07/27/1982

RPI 614

Conhecimento de parecer técnico

#7.1

03/23/1982

RPI 596

15.0

12/15/1981

RPI 582

Deferimento

#9.1

11/17/1981

RPI 578

Anuidade - prazo legal encerrado

#18.2

01/28/1992

RPI 1104

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