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Official data from INPI

METODO DE FORMACAO DE UMA REGIAO DE DIMENSAO ESTREITA DE UM CORPO

ConcedidaInvention Patent
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Application data

Number

PI7907087

Type

Invention Patent

Filing

11/03/1978

Publication

04/10/1984
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Progress at the INPI

  1. Filing11/03/78
  2. Publication04/10/84
  3. Examination07/20/82
  4. Allowance02/21/84
  5. Grant07/31/84
  6. Expired05/02/95

The letters patent expired on 05/02/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 07/31/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

IBM

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Inventors

P. H. (pessoa física)

Technical data

IPC Classification

H01L 21/203H01L 21/302H01L 21/3065H01L 21/3213H01L 21/331H01L 21/76H01L 21/762H01L 21/763H01L 21/768H01L 21/82H01L 21/822H01L 21/94H01L 27/04H01L 29/06

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/31/1984

RPI 719

Notificação para pagamento de retribuição

#13.1

06/12/1984

RPI 712

Publicação do pedido de patente

#3.1

04/10/1984

RPI 703

Deferimento

#9.1

02/21/1984

RPI 696

Exigência - art. 36 da LPI

#6.1

08/02/1983

RPI 667

Exigência - art. 36 da LPI

#6.1

03/01/1983

RPI 645

Solicitação de exame técnico

#4.1

07/20/1982

RPI 613

Carta-patente expirada

#21.1

05/02/1995

RPI 1274

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