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Official data from INPI

PROCESSO PARA PREPARAR UM POLÍMERO DE SILAZANA, POLÍMERO DE SILAZANA ASSIM OBTIDO, PROCESSO PARA PREPARAR UM MATERIAL CERÂMICO DE CARBURETO DE SILÍCIO, PROCESSO PARA PREPARAR UM ARTIGO REVESTIDO COM CERÂMICA, E TAL ARTIGO

ConcedidaInvention Patent

Application data

Number

PI8200189

Type

Invention Patent

Filing

01/14/1982

Publication

11/09/1982

Progress at the INPI

  1. Filing01/14/82
  2. Publication11/09/82
  3. Examination01/08/85
  4. Allowance10/15/85
  5. Grant05/27/86
  6. Terminated11/15/94

The patent was granted on 05/27/1986 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 05/27/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. C. (pessoa física)

US

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Inventors

J. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

225.274 · 01/15/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/27/1986

RPI 814

Deferimento

#9.1

10/15/1985

RPI 782

Solicitação de exame técnico

#4.1

01/08/1985

RPI 742

Publicação do pedido de patente

#3.1

11/09/1982

RPI 629

Pedido de patente depositado

#2.1

03/09/1982

RPI 594

Anuidade - prazo legal encerrado

#18.2

11/15/1994

RPI 1250

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