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Official data from INPI

ESTRUTURA DE TELHADO PLANO

Em AnáliseInvention Patent

Application data

Number

PI8506756

Type

Invention Patent

Filing

05/17/1985

Publication

09/23/1986

Progress at the INPI

  1. Filing05/17/85
  2. Publication09/23/86
  3. Examination03/01/88
  4. Allowance06/05/90
  5. Grant02/26/91
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 07/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

H. (pessoa física)

DE

H. K. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 34 19 658.7 · 05/25/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Conhecimento de parecer técnico

#7.1

07/25/1989

RPI 979

Solicitação de exame técnico

#4.1

03/01/1988

RPI 906

Notificação de entrada na fase nacional - PCT

#1.3

09/23/1986

RPI 831

Carta-patente expirada

#21.1

Patente extinta em 17/05/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

02/26/1991

RPI 1056

Notificação para pagamento de retribuição

#13.1

11/20/1990

RPI 1042

9.1.3

08/07/1990

RPI 1027

Deferimento

#9.1

06/05/1990

RPI 1021

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