Freeman v. Asmus

145 U.S. 226, 12 S. Ct. 939, 36 L. Ed. 685, 1892 U.S. LEXIS 2135
CourtSupreme Court of the United States
DecidedMay 16, 1892
Docket323
StatusPublished
Cited by11 cases

This text of 145 U.S. 226 (Freeman v. Asmus) is published on Counsel Stack Legal Research, covering Supreme Court of the United States primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Freeman v. Asmus, 145 U.S. 226, 12 S. Ct. 939, 36 L. Ed. 685, 1892 U.S. LEXIS 2135 (1892).

Opinion

Mb. Justice Blatckfobd,

after stating the case, delivered the opinion of the court.

■ As we are of opinion that the decree below must be reversed, because of the invalidity of the reissue, it is unnecessary to consider any other question.

The only claim of the- reissue which, it is. now contended, was infringed, is the first claim, which reads as follows: “ 1. A blast furnace with a closed breast, where the slag is discharged through an opening or openings cooled by water, substantially as set forth.” Claims 2 to 7, inclusive, of the reissue are substantially in the same language as claims 1 to 6 of the original. Claim 1 in the reissue is entirely new, and .it is not contended here that :the defendant infringed any of the claims of the original patent, or any claim of the reissue other than claim 1.

It was held 'by the Circuit Court that, while claim 1 of the reissue was not embraced in 'the original, the matter claimed by that claim was so embraced; that the language of the original specification clearly described' the closed-breast furnace; that a furnace built in accordance with the language of the *236 original would be. necessarily closed-breasted; that thé other element of claim 1 of the reissue, “ where the slag is discharged through an opening or openings cooled by water,” was no less clearly described in the original; that the drawings originally filed showed the same; that claim 1 of the reissue might, therefore, have been embraced in the patent as first issued, or introduced into the reissue without changing the specification; that the change made by the reissue simply expressed the same thing in different terms; that claim 1 of the reissue was, therefore, not an enlargement of - the invention; that such additional claim, omitted through inadvertence, accident or mistake, might be secured by means of a reissue, if applied for within a reasonable time; that in this case the application was made a little after the expiration of one year; and that the question whether the omission occurred through inadvertence, accident or mistake, was a question for the Commissioner of Patents.

But we are of opinion that these views cannot prevail in the present case. It is apparent, from the description contained in the specification of the original patent, that Lürmann considered his invention to consist essentially of a removable slag-discharge piece, cast with numerous channels .or pipes running through it, formed with a dovetail at its upper end fitted into the bottom of a stationary metallic plate connected with the furnace, and provided with channels or pipes so that water might flow through the slag-discharge piece and plate, conjointly or separately, that they might be cooled while the furnace was in operation. The slag-discharge piece was made removable, and 'provided with one or more holes, the middle portion of the holes being cylindrical, but each end being conical or flaring. By regulating the flow of water through the slag-discharge piece, its temperature could be lowered sufficiently to allow a coating of slag to' choke the discharge-opening, which coating could be melted out by diminishing the flow of water and thus allowing the temperature to rise. The opening could be closed by an iron block when necessary.

■ The'fundamental devices claimed by Lürmann as his improvements were (1) the metal plate C, provided with water *237 channels; (2) the removable slag-discharge piece provided with water channels; and (3) the method of regulating the discharge of the slag by raising and lowering the temperature of the slag-discharge piece. -

The first claim of the original patent claimed a slag-discharge piece provided with a water circulation, connected with a water-cooled plate C, having small hour-glass-shaped discharge openings, and capable of being removed .from the furnace when desired. The slag-discharge piece of the second claim was of the same character as that described in the first claim. The third claim was for the shape of the slag-discharge opening, flaring at its ends, and of diminished diameter in the middle. The fourth claim was for the combination' of Such slag-discharge piece and a series of water channels or pipes. The fifth claim was for the combination of the metallic plate C, with a series of water channels or.pipes. The .sixth claim was for regulating the discharge of the .slag by varying The temperature, of the water-cooled slag-discharge piece.

Asmus, in his testimony, states that his reason for obtaining a reissue was to make the meaning of the whole invention as clear as possible; that the reason why he did not apply sooner for' the reissue was that, in arranging a number of furnaces, they diffqied more or less in construction, and he had to adapt his construction according to the circumstances; that this made it necessary to give the construction quité different shapes, retaining always the main points-; < that experience caused him, in order to prevent mistakes, to find a formula which- expressed, the spirit of the invention in the clearest way possible, and whieh flowed plainly from the technical description given in the original patent; and that the experience and ,the reasoning derived from it took up some time. When- asked what kind of mistakes he referred to, he said,1 “ That difference'in shape might be takenfor a different thing.”

- This testimony shows that, instead of desiring merely to .remedy formal defects which appeared on the face of the papers,. Asmus waited until expérience and reasoning had shown him the broadest -formula in which tó express .the claim's of his paten}; so a® to cover all possible modifications.

*238 While the petition for the reissue states that Asmus believes that the original patent “ is inoperative and invalid by reason of a defective specification,” he does not make that allegation in his oath, but states in the latter merely that the patent “ is" not fully valid and available to. him; ” and in the statement accompanying the petition and oath, his attorneys say that the claim.in the original specification is confined to a slag-discharge piece or cinder block. constructed and attached in a certain, specific manner, and that the new first claim is added “ with- the view to cover the whole ground of the invention.” A comparison of the original’specification with .that -of the reissue shows that, the only substantial ■ change made "is to insert in the latter enlarged definitions and descriptions of the alleged invention, and the new and enlarged first claim.- -

In the assignment of July 12, 1861, from Lürmann to Asmus, which bears date the same day as the signature ofLürmann to the original-specification, the latter .says that his invention “is fully described in, the specification pertaining to said application, which I have signed -tinder oath.” The inventor did not swear to the specification filed for the reissue; and, although his oath was not. required to it, as the law stood at the time, the .reissue was ap'pliéd. for, yet ■ the fact remains that the reissue was wholly the work of the assignee, and not at all of the inventor; and it by no means followed that the inventor would ever have asserted that there was any error in the original specification or; claims,-' arising from inadvertence, accident, or mistake". 1

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Bluebook (online)
145 U.S. 226, 12 S. Ct. 939, 36 L. Ed. 685, 1892 U.S. LEXIS 2135, Counsel Stack Legal Research, https://law.counselstack.com/opinion/freeman-v-asmus-scotus-1892.