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Official data from INPI

SISTEMA DE ATENUAÇÃO DE SOM ATIVO PARA SISTEMAS DE DESCARGA DE MOTOR E SEMELHANTES

ArquivadaInvention PatentPCT · US1989000665

Application data

Number

PI8905996

Type

Invention Patent

Filing

02/17/1989

Publication

11/20/1990

PCT

US1989000665

Progress at the INPI

  1. Filing02/17/89
  2. Publication11/20/90
  3. Abandoned
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: examination was not requested within the 36 months following the 02/17/1989 filing, the deadline set by art. 33 of the Brazilian IP Act. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 02/24/1993. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Noise Cancellation Technologies, Inc

US

Inventors

E. J. (pessoa física)

J. G. (pessoa física)

Technical data

IPC Classification

Priority claims

US

158.883 · 02/19/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 33 da LPI

#11.1

02/24/1993

RPI 1160

Notificação de entrada na fase nacional - PCT

#1.3

11/20/1990

RPI 1042

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