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

ENCHIMENTO DE CONTATO PARA TORRES DE RESFRIAMENTO

PublicadaInvention Patent

Application data

Number

PI8900935

Type

Invention Patent

Filing

03/01/1989

Publication

08/22/1989

Progress at the INPI

  1. Filing03/01/89
  2. Publication08/22/89
  3. Examination05/01/90
  4. Allowance05/12/92
  5. Grant03/30/93
  6. Expired12/15/09

The letters patent expired on 12/15/2009: 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: 08/22/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alpina Equipamentos Industriais Ltda

SP, BR

See this company's full portfolio

Inventors

R. F. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação antecipada

#3.2

08/22/1989

RPI 983

Pedido de patente depositado

#2.1

04/11/1989

RPI 964

Carta-patente expirada

#21.1

Patente extinta em 01/03/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

03/30/1993

RPI 1165

Notificação para pagamento de retribuição

#13.1

10/06/1992

RPI 1140

Deferimento

#9.1

05/12/1992

RPI 1119

15.7

04/16/1991

RPI 1063

Solicitação de exame técnico

#4.1

05/01/1990

RPI 1016

Patent monitoring

Track this patent in real time.

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