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Official data from INPI

ROTORES OTIMIZADOS DE QUATRO ALETAS, NÃO ENGRENÁVEIS, PARA ACIONAMENTO SINCRÔNICO, EM ÓTIMA RELAÇÃO DE FASE, DE MÁQUINAS MISTURADORAS INTERNA DE CARGAS E MÁQUINA MISTURADORA INTERNA

PublicadaInvention Patent

Application data

Number

PI8901015

Type

Invention Patent

Filing

03/01/1989

Publication

10/24/1989

Progress at the INPI

  1. Filing03/01/89
  2. Publication10/24/89
  3. Examination12/04/90
  4. Allowance04/14/98
  5. Grant11/24/98
  6. Expired12/18/12

The letters patent expired on 12/18/2012: 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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

F. C. (pessoa física)

US

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Inventors

N. N. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

180,779 · 04/12/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/24/1989

RPI 992

Pedido de patente depositado

#2.1

04/18/1989

RPI 965

Carta-patente expirada

#21.1

Patente extinta em 01/03/2009

12/18/2012

RPI 2189

Concessão da patente

#16.1

11/24/1998

RPI 1455

Deferimento

#9.1

04/14/1998

RPI 1425

Solicitação de exame técnico

#4.1

12/04/1990

RPI 1044

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