(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

APARELHO PARA CONTROLAR A RESISTÊNCIA DE VELA DE INCANDESCÊNCIA

Arquivada/ExtintaInvention PatentPCT · US1987002878

Application data

Number

PI8707552

Type

Invention Patent

Filing

11/04/1987

Publication

03/14/1989

PCT

US1987002878

Progress at the INPI

  1. Filing11/04/87
  2. Publication03/14/89
  3. Examination05/22/90
  4. Allowance08/24/93
  5. Grant06/28/94
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 03/14/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Caterpillar, Inc.

US

See this company's full portfolio

Inventors

M. V. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

935,897 · 11/28/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação de entrada na fase nacional - PCT

#1.3

03/14/1989

RPI 960

Carta-patente expirada

#21.1

Patente extinta em 04/11/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

06/28/1994

RPI 1230

Notificação para pagamento de retribuição

#13.1

02/08/1994

RPI 1210

Deferimento

#9.1

08/24/1993

RPI 1186

Exigência - art. 36 da LPI

#6.1

02/09/1993

RPI 1158

Solicitação de exame técnico

#4.1

05/22/1990

RPI 1019

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.