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Official data from INPI

MÉTODO PARA REDUZIR ATRITO ENTRE RODA FERROVIÁRA E TRILHO TANGENTE

Arquivada/ExtintaInvention Patent

Application data

Number

PI9001918

Type

Invention Patent

Filing

04/20/1990

Publication

07/30/1991

Progress at the INPI

  1. Filing04/20/90
  2. Publication07/30/91
  3. Examination08/24/93
  4. Allowance09/29/98
  5. Grant06/29/99
  6. Expired01/08/13

The letters patent expired on 01/08/2013: 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: 01/08/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

T. C. (pessoa física)

US

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Inventors

J. V. (pessoa física)

US

R. Q. (pessoa física)

US

Technical data

Priority claims

US

07/340,903 · 04/20/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 20/04/2010

01/08/2013

RPI 2192

Concessão da patente

#16.1

06/29/1999

RPI 1486

Deferimento

#9.1

DEFERIDO ,DEVENDO SER APOSTILADO À CARTA PATENTE NA REIVINDICAÇÃO N° 1, LINHA 6, ONDE SE LÊ "NEWTONIANO" LEIA-SE "NÃO NEWTONIANO"

09/29/1998

RPI 1449

Exigência - art. 36 da LPI

#6.1

05/13/1997

RPI 1380

Solicitação de exame técnico

#4.1

08/24/1993

RPI 1186

Publicação do pedido de patente

#3.1

07/30/1991

RPI 1078

Pedido de patente depositado

#2.1

08/21/1990

RPI 1029

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