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Official data from INPI

TORRE DE RESFRIAMENTO DE FLUXO CRUZADO, E, PROCESSO PARA RESFRIAR UM LÍQUIDO; TORRE DE RESFRIAMENTO DE TRIAGEM MECÂNICA, E, MÓDULO DE SEPENTINA DE INTERCAMBIOADOR DE CALOR.

Em ExigênciaInvention Patent

Application data

Number

PI8605840

Type

Invention Patent

Filing

11/28/1986

Publication

08/25/1987

Progress at the INPI

  1. Filing11/28/86
  2. Publication08/25/87
  3. Examination11/24/87
  4. Allowance06/19/90
  5. Grant12/26/90
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Baltimore Aircoil Company, Inc.

US

See this company's full portfolio

Inventors

R. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

813.489 · 12/26/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

10/03/1989

RPI 989

Solicitação de exame técnico

#4.1

11/24/1987

RPI 892

Publicação do pedido de patente

#3.1

08/25/1987

RPI 879

Carta-patente expirada

#21.1

Patente extinta em 28/11/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

12/26/1990

RPI 1047

Notificação para pagamento de retribuição

#13.1

10/02/1990

RPI 1035

Deferimento

#9.1

06/19/1990

RPI 1023

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